Is it really that expensive to eat out?

Only if you go to Western-style cafes or sit-down restaurants with waitstaff. Stick to counter-service shops and supermarket prepared foods to save 60%.

Can I use a credit card everywhere?

No. While convenience stores and major shops accept cards, small ramen shops and ticket machines for local transit often require cash. Carry at least 5,000 yen in cash daily.

How to live cheaply in Tokyo

To survive Tokyo on a budget, stick to convenience store meals, avoid taxis, and shop at local supermarkets after 7:00 PM for discounts. Prioritize free public parks and observation decks over paid tourist attractions to keep your daily spending under $60.

Master the transit system. Do not take taxis; they are prohibitively expensive. Buy a rechargeable Suica or Pasmo card and stick to the subway and JR lines. If you plan on traveling across town frequently, buy a 24, 48, or 72-hour Tokyo Subway Ticket instead of paying per ride.
Eat like a local (and a student). Avoid 'sit-down' tourist restaurants. Eat at 'ticket machine' shops (like Matsuya, Yoshinoya, or Sukiya) for $5-$7 meals. Hit 7-Eleven, Lawson, or FamilyMart for high-quality $4 bento boxes, especially after 8:00 PM when they are often discounted.
Drink smart. Alcohol is expensive in bars. Buy your beer or highballs at the 'konbini' (convenience store) for $2–$3 and drink in public parks where permitted, or enjoy them in your accommodation.
Find free entertainment. Skip the expensive observation towers. The Tokyo Metropolitan Government Building in Shinjuku offers free panoramic views. Spend your time in free public parks like Ueno Park, Yoyogi Park, or walking the Imperial Palace East Gardens.

Is it really that expensive to eat out?: Only if you go to Western-style cafes or sit-down restaurants with waitstaff. Stick to counter-service shops and supermarket prepared foods to save 60%.
Can I use a credit card everywhere?: No. While convenience stores and major shops accept cards, small ramen shops and ticket machines for local transit often require cash. Carry at least 5,000 yen in cash daily.