Bachelorette Party help needed

We were going on a camping trip (guys & girls) for my SIL & future BIL, but BIL cancelled last minute. They're getting married 5/25. So, a few of us girls planned a night in (slumber party, games, drinks, etc) and the boys would go to Dave & Busters. See...our problem is 2 of the BMs are under 21 and 2 of the GM are under 21, so we're limited as to what we can do. Yesterday we were tossing around the ideas of all of us (guys & girls) doing a joint party, but where? Any ideas? We're in Suffolk, but can travel if necessary. TIA

What about that bowling place in Queens? Strike is that right. There is one in the city that is great but I think you might have to be of age.

United Skates. Have an 80's theme party