Very good of you Rix. I'm not in, but in the past have found myself with nowhere to go (due to being either a college student or an Army transplant).
One year my presence actually made a noteworthy impact. As a guest, one of the family members started choking and nobody did anything - they just sat and watched this poor guy turn purple and blue.
I jumped up and ran over to him and gave him the Heimlich and saved his life!
A very memorable Thanksgiving.