That is what I used on my first couple of trips. If there was no freezer, or the freezer was too tiny, I would ask at reception if they could put them in a freezer for me. Never been knocked back. I have even done this at a truckstop.
Except at the campground in Whitehorse, when I went to get them the next morning, I was told that someone must have thrown them out. lol
Lifey