Most Tokyo Disney trip problems we hear about in Urayasu — the sold-out park day, the rejected credit card, the 9 pm search for a night clinic — were preventable weeks earlier. This is the checklist we’d hand every first-time visitor, organized as a countdown. Each item links to a full local guide where one exists.

2–3 months before

  • Check every passport in the family. Kids’ passports expire faster than adults’ — this is the classic last-minute discovery.
  • Book your hotel. Location strategy matters more than star ratings here: see the full 48-hotel comparison, the category system explained, and whether Happy Entry is worth Disney Hotel prices for your family.
  • Mark your ticket-purchase date. Park tickets go on sale about two months before the visit date, are date- and park-specified, and genuinely sell out on weekends and holidays. Everything you need to know is in the ticket guide — including what to do when the official site rejects your overseas card.
  • Book teamLab Planets if you want it. The barefoot digital art museum 30 minutes away is date-and-time ticketed and sells out on weekends too.

1 month before

  • Sort your connectivity. An eSIM ordered at home beats airport SIM-counter queues with jet-lagged kids. Any major provider works fine in the Maihama area.
  • Buy travel insurance and photograph the certificate. Japanese clinics are excellent and inexpensive by US standards, but the night clinic is cash-only and insurers want receipts.
  • Install the official Tokyo Disney Resort app and make sure you can sign in from your region. On the day, it handles Premier Access and wait times — details in the ticket guide.
  • Set up Suica on your phone (Apple Wallet or Google Wallet). One tap covers every train and bus in this guide — including the routes into central Tokyo.
  • Screenshot your hotel’s shuttle timetable. If your hotel runs a bus, the last-bus time decides your evenings.

1 week before

  • Plan your cash. Japan is more cashless than its reputation, but carry ¥20,000–30,000 per family for small restaurants, lockers, and the cash-only emergency clinic. Airport and convenience-store ATMs take foreign cards.
  • Pack shorts if teamLab Planets is on the list — you’ll be knee-deep in water (rentals exist, but your own are nicer).
  • Pack medicines and an allergy card. Bring children’s fever reducer you trust plus a phone note in Japanese listing any food allergies to show restaurant staff.
  • Break in the shoes now. 20,000 steps per park day is normal. New shoes on Day 1 is how blisters happen by Day 2.

The day before you fly

  • Download offline maps of Maihama and Urayasu, and screenshot all bookings (hotel, tickets, teamLab) in case you land without data.
  • Plan a soft landing. After a trans-Pacific flight with kids, don’t burn a park ticket on arrival day. A free, low-stakes afternoon at Urayasu Traffic Park or an early soak at the Maihama Eurasia onsen beats melting down in a queue.
  • Charge everything, pack one power strip. Japan uses Type A plugs (same shape as North America, 100 V). One travel power strip means one adapter for the whole family for visitors from elsewhere.
Nothing on this list is sponsored. It’s simply the set of steps that separates the relaxed families we see around Maihama from the stressed ones — most “bad luck” on a Disney trip was decided a month earlier.