If you are entering at the same time, you can enter together by presenting one Expo ID for the representative and QR codes, which are electronic tickets for everyone entering at the same time, on one device, so you do not need to create an Expo ID for each person.
If you are entering at the same time as your family, you can make a reservation for a visit date and time for all your family members by yourself.
*However, Expo IDs are required for each ticket, as face registration is required for the Full Year Pass and Summer Pass.
Please check the Associatio's official website below for how to reserve a visit date and time.

https://www.expo2025.or.jp/en/tickets-index/reservation/