are tennis shoes the best to wear for a 9 year old?

I’d say probably the sandals are best, because there is a water park, but even if you aren’t going there, there is also a few rides in which you will likely get wet. Otherwise, tennis shoes would be fine.

Comfortable, close tip shoes are the best.

Yes make sure they are comfy and not brand new.

Yes !!! Because u need to walk all the park

Yes, you would at least get 8000 steps done by walking around the park.

Yes

Yes although there is a water park there if you're interested in that

Honestly it gets very hot some days and the ground heats up I would wear something a little thicker