Yes, because that person was assigned to your party to make sure everything went well for your child.
Daughter's bf used to work at Chuck E Cheese and be the host and it was deplorable at how parents treated him.. He made sure all the kids were happy, there was plenty of food, drink, cleaned EVERYTHING up afterwards.... Mom/dad did nothing but enjoy the party. Many parents gave no tip but he made out well when the NBA team players and pther sports figures who live in our area had parties for their children. One NBA guy gave him an autograph and a $200 tip.
He said you can usually spot the ones who go cheap and will not tip.
I'm sorry if I come across rudely, it is not my intention, but these hosts and hostesses for parties rely on decent tips.
ETA: Yes to tipping the person who ran the laser tag and cannon ball. Keep in mind, they were assigned to you to help your party run smoothly.