My son just turned 2 months and he got his vaccinations, so of course I let people know we were comfortable with bringing him to their houses for small gatherings so they could meet him. His grandma and grandpa (my parents) have both met him just once each since then. My fiancee had met an older man and his wife through work last year. They became close, but I don't really know them that well, besides small conversations here and there. She has taken our son to their place quite often the past few weeks, and they've stopped by ours, and shes been calling them "honorary grandparents." I like them, I really don't have a problem with them at all, however today my Grandma messaged me about coming over for a holiday cookout, my parents will be there too so my son will see them again. But she kept insisting she wanted to go to these other people's house for THEIR cookout. I told her I didn't want to, my grandparents are bordering 90s and I want them to spend as much time with my kid as possible. She got mad. I got mad. I told her of she wanted to go to their cookout she could after we go to my families. She wants to go there all day to go out on their boat and blow off fireworks, and I finally just said no. I told her if she wants to go to their cookout she could, but me and our son were going to my grandparents and she finally relented. The "honorary grandparents" are mad, but i told them they see him all the time, and I don't care that they do, but today is my families day with him. Was I the asshole??