Does the adult accompanying the child have to purchase a ticket too? Or only a ticket for the child? Can others not wanting to join in on the rides or water park … enter the park without paying entry?

All guests that enter Nickelodeon Universe need to have a ticket including chaperones and parents that are accompanying guests. For more information on tickets and pricing, please see our website. We hope to see you soon!

Yes I'm pretty sure

Yes as of now they do but I know they are working on changing that! They are a really friendly company.

If the child is older than 3 you have to purchase a ticket/wristband

Yes adults pay.

Everyone coming into the vicinity must pay. Only children under 3 years old don't pay.

Yes everyone has to pay regardless of participation. Which I don't think is right. Some grandparents want to take their grandkids and can't do the rides etc yet have to still pay. They could easily provide color coded bands that distinguished participants

Yes

yes because the adults ride with the children most of the time

Everyone on your party much purchase a ticket, regardless of if you will be participating in the rides or not