I can see a little bit of blue off in the background, too; so it does look like there is at least a small lake. That is still a lot of buckets of (cold) water to be hauling uphill through the snow, just to have a hot tub full. It must be one that is fast heating at that, or they would be waiting overnight for the water to get hot.
I guess we were all supposed to just notice the girl (like
@JoshPosh did) and not think about where all of that water came from or how it got nice and hot. Besides, where did they plug it in?? Must have been a currant bush nearby, maybe.
It is definitely a lot different than what I remember as going camping. I don't even SEE a campfire. How can it be called a camping trip if there is no campfire......