When I go to someone's house AMD I am not sure what they are going to have, I usually bring a salad. Then if they serve meet I can add that to my salad. Sometimes I eat a snack before and/or after, that way if there is no healthy food I know that I had something to eat. I also "pretend" to eat food when unhealthy food is served to me. I do this a lot when I am served cake at a party, I play with my food like a kid and just push it around the plate, so it appears that I ate some of it and I don't offend the cook or host.