We just disembarked this cruise (the easiest and fastest disembarkation in 30 cruises). The Observation Lounge was indeed taken over by Park West Gallery for all but the last day of the cruise. We wrote to the general manager about this and along with some other issues, the captain sent a letter to all of the 3200 passengers apologizing for the things that went wrong. We were all given a $200 onboard credit and 20% off a future cruise.