All major hotels and most restaurants and shops accept credit cards. It is advisable to carry an identity card, passport or other form of photo identification. To go sightseeing, cash is recommended. Temples and shrines usually do not accept credit cards.
The voltage in Japan is 100 Volt, which is different from North America (110V), Central Europe (220V) and most other regions of the world. Two kinds of frequencies are in use; 60Hz in the west (Kyoto), 50Hz in the east and Tokyo. Flat 2-pin plugs. (There are no columnar-shaped plugs or 3-pin plugs.)
Although Japan is a clean and relatively safe country, it is always advisable to take out travel insurance for the duration of your stay. The meeting organizers will not be held liable for illness, accidents or thefts suffered by participants.
Japan has only one standard time zone: UTC/ GMT +9 hours.
Tipping is not customary in Japan.