1. According to the regulations, food and drinks are not allowed to board the plane, but the inspection is not very strict. It is recommended to bring less, and more will attract more attention. If it is found out, it will be kept for you on board and taken away before disembarking.
2. MasterCard will do.
3. Jeju: Chengshan Sunrise Peak or teddy bear museum Line.
Fukuoka: One-day trip to Fukuoka (Asahi Brewery+Dazaifu+Fukuoka Tower+Shopping)