PORT OF JAPAN
Journal

Money, Wi-Fi & eSIM for a Japan Cruise: The 10-Minute Setup

Photo: Fabian Reus from Tokyo, Japan / CC BY-SA 2.0

August 9, 2026 · By Takumi Yamada · Built from mapped 2026 itineraries

Two small frustrations eat more port hours in Japan than any missed shuttle: standing at a market stall realizing it’s cash-only, and watching a map tile refuse to load on ship Wi-Fi. Both are fixable in ten minutes before you fly.

Cash: more than you expect, less than you fear

Japan’s cities take cards nearly everywhere now — but the places we send you are not always cities. Market stalls, tram fare boxes, temple entrance windows, the old lady selling grilled squid: cash country. The comfortable budget for a couple is the yen equivalent of US$60–100 per port day, drawn at an ATM rather than exchanged.

Two ATM networks accept foreign cards reliably: 7-Eleven’s Seven Bank and Japan Post Bank machines — both with English menus, both present in every port city on your itinerary. Draw once for several days; yen is safe to carry here.

The IC card trick

A rechargeable transit card (Suica or ICOCA, physical or in your phone’s wallet app) turns every tram, subway and many buses into tap-and-go — and works at konbini and vending machines too. Load it at any station machine. For iPhone users, a Suica in Apple Wallet takes two minutes to set up before you leave home and removes an entire category of fumbling.

Connectivity: the eSIM beats the ship

Ship Wi-Fi prices keep climbing and speeds sink whenever everyone posts their Fuji photos at once. The fix is a Japan data eSIM installed before you fly: switch it on when ashore, and your maps, translation and messaging run on land networks at land speeds. Install and test it at home — activating anything from a ship’s satellite connection is misery by design.

Phone won’t do eSIM? Terminal Wi-Fi is common and free in Japanese cruise ports, and konbini fill the gaps — workable, just less graceful.

The 10-minute checklist

  1. Confirm your card’s foreign ATM fee; pack a backup card.
  2. Install a Japan eSIM and test it at home.
  3. Add Suica/ICOCA to your phone wallet (or plan to buy the card at the first station).
  4. Save your ports’ guide pages — every page on this site has a Print button for exactly this reason.

Then forget logistics and go enjoy the country. That’s the whole point of doing this before you sail.

Quick answers

FAQ

How much cash do I need per port day in Japan?

A comfortable rule for two people: the yen equivalent of US$60–100 per port day covers market lunches, trams, small shrines and souvenirs — the places where cards still falter. Cards work fine at department stores, konbini and most restaurants in port cities; the cash is for the good, small places.

Should I buy an eSIM for a Japan cruise?

If your phone supports eSIM, it's the easy win: install a Japan data plan before you fly, switch it on when you're ashore, and stop depending on ship Wi-Fi for maps and translation. Buy from a major marketplace before the trip — activating at sea is exactly the kind of task ship Wi-Fi is worst at.

Do Japanese ports have free Wi-Fi?

Cruise terminals commonly offer free Wi-Fi, and konbini and stations often do too — but coverage is patchy and login pages are fiddly. Treat free Wi-Fi as a bonus, an eSIM as the plan.

Plan these ports

Guides mentioned here