boiling

Does anyone reheat frozen foods that have been sealed in Food Saver plastic? I have some BBQ sides that I want to warm up. I was thinking that I could drop it in some boiling water until it was hot. Will the bag hold up to the heat?

My goal is to have boiling water at a tailgate so I can make hot chocolate and spike it with some peppermint booze. I'm trying to figure out the easiest way to do this (and the cheapest). Right now I'm leaning towards the little camp stove in the attached picture. A tea kettle seems lame...