Do you have to pay for a child under 2 for tickets?

For the upcoming Sesame Street show, they've posted on their site that ages 1 and above must have ticket, so if the child is under 1, then no, but between 1 and 2, yes.

Depends on the show but generally yes

Yes

I'm not sure, I took my niece who is 4 and I paid for her ticket. You may need to call and ask or go on website it might tell you.