No, it's fine. The container is remarkably dry and moisture free, The Tigger wasn't 100% dry when I last put it away but it's all nice & dry now. The container has 4 air vents per long side & 2 at the back which really work very well. I thought I was going to have to put a very small tube heater in but it's as dry as a bone in there.
The Tigger comes with three heat settings built in to the left hand switch cluster, low is barely perceptible, med is a very gentle heat and high is pleasant but not quite as hot as I would have liked. It will be a net gain on the heat front so has to be good for chilly days.