Hey there. Just to confirm, you are talking about the Hamada across the mountains from Hiroshima on the Sea of Japan side in Shimane prefecture?

If that is the case, then it will likely be a highway coach bus with 4-5 steps up into the carriage….

Also, @wtj could likely help! Their daughter is in a wheelchair.

You could maybe try Abilities. I think they have a showroom in Shinjuku.

https://www.abilities.jp/

Do you need it just for in Disney? Disney Tokyo has wheelchairs you can rent on the premises.

I’m not sure, but I think almost all international flights with on planes with two aisles have them now by law… where are you flying from? What is the airline?