Birthday Party Abandonment

[Clodfobble]

In your experience, how old were the kids when parents just started dropping them off at birthday parties and coming back when it was over? I didn't get invited to a lot of birthday parties in elementary school, and I can't remember the 2 or 3 I know I must have been invited to, so I can't remember where that line used to be, not that it would necessarily be the same today.

So far all the parties we've been to this year have been at bouncy-castle places, which I guess have rules that no one can leave their kid there to begin with. Suddenly today there was a party at a house, and one other mom and I were the only ones who stayed. The host mom said she was surprised, me I was rather stunned. One kid spent the last half of the party sitting by the front window waiting for his mom to come back. Is this the point where the bandaid normally gets ripped off?