I really don't wanna visit my bf's parents and sister for New Year?

So for the past 3 years since I've been with my bf we always fly out to see his parents for New Year cuz they make a big deal about it for some reason. To me it's just another day and I really don't want to celebrate the fact that time is flying by anyway. They're nice people, dont get me wrong, but when they all get together they're all stubborn and bossy so they all clash and make a big deal about everything, like where we're gonna go eat and they always stress that they have to be somewhere at a certain time, and I always felt rushed..geez. His sister can be bossy but shes usually nice, just once in a while she'll be like "oh go get ready" or "go to bed now" and I'm thinking im not an effin kid woman you're 4 years older than me, baaack off I wanna say so bad. I have to stay a full 4 days. I've been by myself for almost a week now and it's been really relaxing, since it's my break from college and all. I really don't wanna go tomorrow, cuz even tho his family doesn't mean it, I always come back more stressed than when I left. But if I back out, my bf will have spent like almost 200 dollars for my ticket. I'm just not in the mood to be bossed around and they speak another language so its even more annoying. I enjoy deep relaxation, not chaos and loud talking, etc. I'm just not looking forward to it. Should I just not go? It might be weird if I don't. They like me a lot...I just hate people nowadays. I'm sick of having to accept jerk wads for who they are, blah blah.