Keep in mind that the walk from MGM Grand to Bally's takes about 30 minutes (at least in hot weather). But maybe SB and Kik have a place for an additional person (rooms were big enough)? I mean, if you are 2 or 3 in a room doesn't make a huge difference.
I myself am not too fond of sharing rooms (bad memories about old trips when i couldn't afford single rooms), sorry
