A friend of mine tried to 'travel-hack' SXSW by renting a U-Haul and attempting to stay there instead of renting a hotel...
He forgot that it: (A) might be pretty chilly and (B) would remain unlocked, unless he wanted someone to lock him in and unlock him in the morning.
Needless to say he ended up crashing on the floor of my house, which really is a much better and long-standing 'travel-hack' to begin with.