Super Bowl Party and I was wondering how to keep food warm or at least my food?

My husband is in the Navy and is required on Super Bowl Sunday and the ship is to enable them to have a potluck. He volunteered to make my Bacon Wrapped Cocktail sausage. I’m OK with that, but I’ll try to understand how to keep them warm for a while. When they receive gets cold bacon fat becomes soft and strong. I do not want that to happen. I think it would have access to a microwave, I do not think I can bring a & # xeb; crockpot. Thank you for your help and ideas.