DS dx with celiac disease 5/28/10
I used to be firmly in the camp of opening the gifts at the party, and we did do it at DS's first BD. I do think people appreciate seeing you enjoy what you got them and I grew up that way.
However, I also haven't been to a BD party this year where gifts were opened and when we did open them at DS's party, even though it was only family he got too many gifts and IMO it became awkward b/c it took so long.
We're probably not going to do that again this year, and will just follow our friends' trend.