Would you feel awkward at a Christmas get together party like this ?

My daughter has this big, extended family and they keep marrying and new babies and spouses are added. Then they have relatives of friends and friends of relatives and it seems endless. It’s nice for her, yes, but how would you like it if you were going to be receiving gifts from some of them? More than half won’t give me anything, some will and I’m supposed to buy gifts for their HUSBANDS , who I like a lot but it feels strange. Then they all eat dinner off of styrofoam plates which I can’t spell. I do not want to go there; I’d rather stay here and have one turkey.
Would you enjoy a huge, picnic type thing like this, not knowing who would get you something , who will and have to reciprocate?
They are very nice and accepting but not relatives and not close friends.