Do I need to bring diapers and formula?

No. Major cities like Bangkok, Kuala Lumpur, and Singapore have massive supermarkets (like Lotus's or Cold Storage) that stock major international brands. Pack enough for the first 48 hours only.

Should I bring a travel stroller?

Only if it is a compact, 'airplane-overhead-bin' size stroller. Sidewalks in Southeast Asia are often uneven or non-existent, so you will end up carrying it more than pushing it.

Packing for a Family Trip to Southeast Asia

Focus on lightweight, moisture-wicking fabrics and pack a specific medical kit for tropical climates. You only need one week's worth of clothes because laundry services are everywhere and cost about $2 per kilo.

Select the right fabrics. Avoid denim and thick cottons, which take days to dry in high humidity. Stick to linen, bamboo, or synthetic athletic fabrics that dry overnight.
Prepare the medical kit. Pack pediatric-strength electrolyte powder, high-DEET insect repellent, hydrocortisone cream for bug bites, and a basic antibiotic ointment. Pharmacies are accessible, but brand names vary.
Optimize for modularity. Use packing cubes to separate family members' clothes. Assign each child a color-coded cube so you don't have to dump out entire bags to find a clean shirt.
Plan for footwear. Bring one pair of versatile walking sandals and one pair of lightweight sneakers. Everyone will be taking their shoes off constantly at temples and homes, so avoid complicated lace-up boots.

Do I need to bring diapers and formula?: No. Major cities like Bangkok, Kuala Lumpur, and Singapore have massive supermarkets (like Lotus's or Cold Storage) that stock major international brands. Pack enough for the first 48 hours only.
Should I bring a travel stroller?: Only if it is a compact, 'airplane-overhead-bin' size stroller. Sidewalks in Southeast Asia are often uneven or non-existent, so you will end up carrying it more than pushing it.