Can 5 year olds go on the tube slides with a parent??

It depends if they meet the height requirements. There are small slides that 5 year olds can ride.

If they are at the green line they can go by them self if they are not in the green line they have to go with a adult

Must reach 48" for most rides and slides to go alone. There is a requirement for the slides too.

Yes but have height requirements

It's all height requirements.

I believe so but they have to be a certain height n I think with a adult