First off thank you everyone for all the great responses, and all of you had something helpful to say and I really appreciated it
I sucked it up and went. I think I was psyching myself out a little to be honest. It was fine. No one even noticed that I had lost weight, or at least they didn't bring it up. I ate the amount I normally would, just with more salad and less potatoes, and I was brought the second biggest piece of dessert (Some lemon cake/tart thing that is my favorite!) Ate it all, probably shouldn't have but I had dragged myself to the gym for two hours yestereday, so I think I about broke even on the calories front
I was glad to see our foster nephew, hes the cutest thing and so entertaining. That alone made it worthwhile
Thanks again everyone!