If all of the "good" rooms are booked you're going to end up with the leftovers that nobody wanted. Sorry, not for me. I'd rather spend a few extra dollars to know exactly which room I'll be in.
Mariner-05/06 & 10/09
Oasis Inaugural Cruise-12/09
Monarch-03/10 & 07/10
Mariner; RSS- 10/12
Legend of the Seas; 04/16/2014; Booked