Charlie received two 6th birthday party invitations today for drop-off parties. One is at a car-racing place and the other is at the zoo.

I am fine with drop-off parties at venues. In New York where space is a premium, it seems that many parties from now on will be drop-off!

What age would you be ok with a drop off party at a venue? (I'd feel differently if it were in someone's home that I didn't know.)