Just want to say thanks for all the advice and comments - especially David. My husband and I are planning an inside passage cruise June 9 and were also trying to decide between Mercury or Vision. We've decided to try Celebrity for the first time. I've been on RCI twice and loved it - would be great for kids! Like others have mentioned, I think the Mercury will be a treat for a 1st Anniversay trip for an early-40's couple (traveling with NO kids this time!) We've always been on Caribbean cruises (went on Grand Princess 6/01 for our honeymoon)...ready for Alaska and a more "refined" atmosphere! The others sure were fun, though!!!!