Vacation/spouse

Anonymous question please…

How many people go on vacations with their in-laws, including their significant other’s siblings & their spouses, nieces/nephews ? All staying in one big house together ? I understand some people do this, but for me it’s too much. We did this twice with my significant others family, and it’s just too much for me. It wasn’t a bad vacation or anything, it just is a little much. I don’t enjoy having to socialize THAT much with so many people. My issue is that we did that two summers straight, a few years ago. And this year my significant other said yes to his parents that we will go this year with them all, and didn’t even ask me first. Just said yes to it and requested the days off work for himself. Would anyone else have an issue with this? He says I am just being rude and too antisocial. Please kind answers