I wonder why no one has come up with the idea of building some kind of a floating [in the air] hotel/restaurant yet? It could use airship technology, it wouldn't necessarily have to move from place to place - could just be tethered in a particular spot. Gas loss/expansion/contraction issues could be solved by pumping gas along the tethers. Not sure how people would actually get up to/down from it - some kind of cable car along the tethers? Helicopter? It would obviously need to be located in a part of the world where the weather changes in a very predictable way, in case of heavy weather anticipated it could perhaps be hauled down or perhaps set 'free' and would then return to base? If people can build an underwater hotel or one from ice then why not a flying one?
Golf-Sierra