I have created a TRADITION of skipping the party for my 2 year olds! I went to too many parties where the least happy party-goer was the freaked out, 2 y.o., guest of honor with their crazed, proud parents dragging them through the whole wretched, over-simulating day.
At ONE, I do grown-ups only...because I survived!
At TWO, for my first boy, I went to McD's playland and blew up a bag of balloons from the 99c store. As kids came and went they played together and the balloons made it extra fun. We stayed for hours, til he was burnt out. I don't remember what we did for my second son's 2nd b-day but it was equally mellow and all for him...no pressure.
At THREE, (I think they only then start to get it and want the party), I went to Vons bakery and let him pick out a birthday cake of his choice then loosely built the party theme around that.
At FOUR, I could never have gotten away with not giving my son a party! He talked about it for MONTHS preceding.
You're doing just fine, mama! You have a little time to worry about friends, etc. before your daughter will hold you accountable. ;)