We traveled on Azamara's Quest July of 2011 along the Dalmation Coast and Oceania Riviera June of 2012 Western Mediterranean, both with our college-aged children. We enjoyed both trips and would be happy to travel with either ship again in the future! The two lines appear to be competing for the same clientele, so we would recommend you go with the better deal and the ports that interests you most. Both lines seemed to appeal to worldly travelers, who appreciate good quality, with a casual atmosphere.
Attire:
We did dress up some nights, but it was never required. Azamara Questseemed to have more people getting dressed up for dinner, but never stuffy! If you liked to get gussied up, you could on either.
7052. Perfect! Center and port side seemed to have better views entering and exiting ports. Convenient to stairs and elevator.
7103. Right across from elevators, but not too noisy. Port side seemed to have better views going in and out of ports.