Hospital Visitors & Twins

My fiancé and I both have very large families. I have 2 brothers 18 & 12 and he has 2 brothers 21, 17 and a 15 year old sister. His siblings all have gfs/bfs who live with them at his moms house so they will be coming to the hospital too. His aunt has 6 kids who he is very close with but her kids are all young (16 and under) is it rude to say I only want close family there aka not the aunt and her children? I’m just so scared that they might come early and they will already be so tiny and born during flu season. I’m just not sure what I should do about this. I’m also wondering if I could tell my doctors and nurses about this and see if they could tell them that the children have to stay in the waiting room since they aren’t either of our siblings and are under 12. I wonder if they would tell them that is their policy? I just don’t want them to get angry with me. I don’t want rowdy kids around me and two tiny newborns. Is this rude?