If I bring my kid, do I need to pay for a ticket for myself even if I am not going to do any of the attractions?

No .

No we go with the kids all the time and just watch. But depending on how tall he or she is, some rides require an adult to accompany them.

Hi Chris, you do not need to pay for a wristband if you are not riding any of the attractions.

Nope

You can just watch your kid have a great time for free.