Going to Thanksgiving or not?

I have a Thanksgiving to go to with my 5 cousins . We grew up together next door to each other. These cousins and I don't see eye to eye with a lot of things. When we don't see eye to eye they tend to discuss it between themselves and then they come to me to tell me what they think. I feel they gang up on me.
And there's no one to stick up for me. A recent argument took place a few weeks ago. Didn't really come to an agreement. So I know when I show up, it will be the topic of conversation. Its won't just be jus my 5 cousins. There will also be their significant others and their kids whom some are adults now. They all may get there early to discuss the situation as a group before I get there. I don't really want to go, but they invited me like they do every year. What should I do?