It was the first birthday party he's attended where I haven't known the birthday person's mother. He was completely in charge of his EpiPen and inhaler. I did a quick check of the food and talked to the birthday boy's grandmother (who was delightful and very helpful), but otherwise he was on his own. (The only reason I didn't talk to the mother is because she looked so busy - 16ish boys and 6ish girls at the party! And it was a great party, very impressive!)
Anyway, I'm very proud of him. He is the best person to be in charge of it, but it's such a responsibility for a 7 (nearly) year old.
(He's only allegic to peanuts now but has very bad reactions in the past. Those were years ago, though. Luckily he remembers them, so knows what to look out for and remembers how the EpiPen works and I've shown him how to use it, of course. Hasn't used it on himself, though.)