u/Double-Charity-868

So am I gonna be assigned a random roommate if I don't get selected for a single room at mac? or can I request a roommate if I find out there aren't any singles available. Also if I don't roommate request do I have a higher chance of getting a single room? And finally I'm a pretty light sleeper so noise/light really bother me so can I put that on accommodations and would they consider that as valid and increase my chance of getting a single room.

So title says it all. I don't really care about location too much but if one of them is really convenient that would be nice. I also would like a room with AC, decent communal or single washrooms and decent communal areas.