I was doing the "room temp" exchanges while at the hotel for the first day, but then I wanted to be pampered. So I figured out a way to heat the bags in a simple way. Then I shared it with others. It's pleasant to pamper oneself occasionally, God knows we all deserve it.
I find this discussion about not using a microwave really interesting. Here in our PD unit, they use a microwave all the time and basically instruct on how to do it.Maybe it's a Canadian thing.