MSPeconomist

Much would depend on laws and regulations of the local jurisdiction (innkeeper laws, eviction rules, etc.) in the extreme, but I would generally expect a decent hotel to charge the rack rate for an overstay when they're fully booked and to then pay to walk another guest if needed, assuming that a celebrity isn't involved. Some people try this as a way to get rooms during special events--i.e., arrive a few days early for the Super Bowl and deliberately plan to overstay.