I say you've paid your money, do what you like on the floor
as long as it doesn't interfere with others enjoyment.
The trouble is, I think it often will interfere, because, (perhaps excluding cha cha and samba,) if you're circulating around a busy room, there are always going to be MJers who have to take avoiding action.
If there is plenty of space, then I don't see any problem.
Greg