Should we each bring a carry-on or share one checked bag?

Each bring a carry-on. Sharing one checked bag sounds efficient but causes problems: you can't split up at the airport, you're stuck together if one person wants to nap while the other explores, and Japanese hotels often require both guests present for check-in with all luggage. Two carry-ons give you independence and speed through airports.

Can we buy what we forget in Japan?

Yes. Japanese drugstores and convenience stores stock everything you need: toiletries, basic clothing, umbrellas, pain relievers, phone chargers. Prices are reasonable and quality is high. The exception: shoe sizes above US women's 9 or men's 11 are hard to find, and Western deodorant is rare. Bring those.

How do we handle different temperature preferences?

Layer independently. One partner runs cold, the other runs hot — this is normal. The cold one brings a scarf and a midweight fleece, the hot one brings a light windbreaker they can stuff in a bag. Japanese buildings are climate-controlled, so you're adjusting for outdoor walking and trains. Don't try to coordinate warmth levels, just coordinate colors.

What if we have very different packing styles?

Set a weight or size limit together, then pack your own way inside that limit. One person rolls, the other folds — doesn't matter as long as both bags fit overhead and both of you can carry your own bag up stairs without help. Japan has lots of stairs and not all stations have elevators. Pack light enough to manage solo when needed.

Do we need travel insurance as a couple?

Yes, and buy separate policies unless you're married or domestic partners covered under one plan. Travel insurance for Japan should cover medical emergency, trip cancellation, and lost baggage. Expect to pay $60-120 per person for a 14-day trip. If one of you gets sick or injured, the other can continue the trip while you recover — separate policies keep this flexible.

Pack for Japan as a Couple

Pack one carry-on each with layerable neutrals you can mix and match between partners. Japan's compact hotels and frequent city-hopping favor light packing — you'll share laundry loads, split toiletries, and coordinate outfits to halve what you bring. Plan for 7 days of clothing regardless of trip length.

Decide your packing philosophy as a team. Before anything goes in a bag, sit down together and agree: are you carry-on only or checking bags? Most couples doing 10-14 days in Japan succeed with one carry-on each plus a personal item. Checking bags costs time at baggage claim and limits mobility between cities. If one partner wants to check and the other doesn't, the carry-on person carries shared items like toiletries and electronics to balance the load.
Build a shared color palette. Choose 2-3 neutral base colors that work for both of you — black, navy, gray, olive, or tan. Every piece of clothing should work with every other piece. This lets you share accessories, reduces decision fatigue, and means you can dress well in photos together without looking like you planned too hard. One partner brings the black jacket, the other brings the navy one, and you swap when you want.
Pack 7 days of clothing for any length trip. You'll do laundry. Japan's coin laundries are everywhere and hotel laundry service is reliable. Pack: 7 underwear, 7 pairs of socks, 2 pants/skirts, 1 shorts (spring/summer), 4-5 tops, 1 light jacket, 1 warmer layer, 1 dressier outfit each for nice dinners. Wear your bulkiest shoes on the plane. Bring one backup pair that works for walking and dining. That's it.
Consolidate toiletries and split the weight. You do not need two of everything. Share: sunscreen, toothpaste, shampoo bars, laundry detergent sheets, first aid supplies, medications. Put shared items in one person's bag. Individual items: toothbrush, deodorant, face products, prescriptions, hair tools. Decant everything into TSA-friendly containers or buy on arrival at any Japanese drugstore. One partner carries toiletries, the other carries electronics.
Coordinate tech and entertainment. One universal adapter with multiple USB ports serves both of you. One portable battery pack you pass back and forth. Download different books and podcasts and share devices on long train rides. If you're both bringing cameras, assign roles: one shoots wide, the other shoots close-up. Or one brings the mirrorless, the other just uses their phone. Don't duplicate.
Pack one nice outfit each. You will want to eat at one kaiseki restaurant, one izakaya where locals go, one tiny sushi counter. You don't need formal wear, but you'll feel better with one outfit that's a notch above your daytime walking clothes. For them: dark jeans or chinos, a collared shirt or clean sweater. For them: a dress or nice pants with a blouse. These same pieces work for shrines, upscale shopping districts, and evening strolls.
Plan for laundry on day 4 and day 8. Most couples hit a coin laundry mid-trip and again toward the end. Coin laundries cost 300-600 yen per load and have dryers. Hotel laundry service runs 200-400 yen per item and returns next-day. Bring a small bag of detergent sheets or plan to buy a single-use packet at the laundromat. Do laundry together, then hit a convenience store for chu-hi and snacks while you wait. It's a trip moment, not a chore.

Should we each bring a carry-on or share one checked bag?: Each bring a carry-on. Sharing one checked bag sounds efficient but causes problems: you can't split up at the airport, you're stuck together if one person wants to nap while the other explores, and Japanese hotels often require both guests present for check-in with all luggage. Two carry-ons give you independence and speed through airports.
Can we buy what we forget in Japan?: Yes. Japanese drugstores and convenience stores stock everything you need: toiletries, basic clothing, umbrellas, pain relievers, phone chargers. Prices are reasonable and quality is high. The exception: shoe sizes above US women's 9 or men's 11 are hard to find, and Western deodorant is rare. Bring those.
How do we handle different temperature preferences?: Layer independently. One partner runs cold, the other runs hot — this is normal. The cold one brings a scarf and a midweight fleece, the hot one brings a light windbreaker they can stuff in a bag. Japanese buildings are climate-controlled, so you're adjusting for outdoor walking and trains. Don't try to coordinate warmth levels, just coordinate colors.
What if we have very different packing styles?: Set a weight or size limit together, then pack your own way inside that limit. One person rolls, the other folds — doesn't matter as long as both bags fit overhead and both of you can carry your own bag up stairs without help. Japan has lots of stairs and not all stations have elevators. Pack light enough to manage solo when needed.
Do we need travel insurance as a couple?: Yes, and buy separate policies unless you're married or domestic partners covered under one plan. Travel insurance for Japan should cover medical emergency, trip cancellation, and lost baggage. Expect to pay $60-120 per person for a 14-day trip. If one of you gets sick or injured, the other can continue the trip while you recover — separate policies keep this flexible.