does the tub come empty?
i'd just like to say we did actually do that. hard to believe but there are unpopulated areas where you can just set up a bathtub and soak out in the open air. (it was a pain to clean up, so there was a bit more 'setup' involved than indoors)
i regret never asking my grandfather how he got multiple tubs up that mountain but he'd be amused to see it in a game