Group Sex, who’s in?

Recently I was invited to a swingers party. I did decline and now I am taking back under consideration. I don’t have a great body image of myself but I do know my curves are attracted to other who enjoy sex with me. I am also very competitive. Not sure I would like someone able to pleasure better than myself. My first thought is to go and watch. See what the dynamic of the group looks like and size up my competition. What would you do? I hate saying I’m not into something when I haven’t tried it.