Call me an old fuddy-duddy but I'm not quite sure why you think hosting a Mother's Day event is the best idea.
While my children love your facility; where they can skate, bowl, ride go-carts, play electronic games for "awesome" prizes & generally act like they have absolutely no home-training, I (& the majority of my fuddy-duddy mom friends) think of it as our own personal hell.
I do, however, commend you on the foresight to put in a bar. If I didn't have to fork out roughly $100 per child, I would love a $7 Jack & Coke. But that plastic airplane, which wouldn't get a second glance in the Dollar Tree, is the must have item of the day therefore my child will try his damnest to win the 1000 tickets needed to own this prized possession (that probably won't even make out of the car when we finally get home) so I'll just take this Xanax instead.
Back to the Mother's Day thing. While I love my children dearly (& they are the reason for the whole Mother's Day "holiday") it's other people's children that I'm not a big fan of, especially those who really don't have any "home-training". I'm thinking a better idea would be a NO Mothers Day. Give us the day off! New rule- if you have kids under 18 you get the day off. Daddy's Day at Rigby's, 2 for 1 beer, whatever it takes. Actually I can't think of a single place Retro has taken all 3 kids without me. But that's a whole other post.
So thanks for the thought, but I prefer to spend my Mother's Day laying out by the pool with my Jack & Coke reading my book while my children virtually ignore me. Or hosting a pool party for my momma's entire side of the family (at least I can yell at those kids or hide in the closet, if need be) which is what I'll be doing.
Thanks so much,