We were on the very first cruise the Mariner did in Alaska in 2001. It was very beautiful. We sailed from Vancouver to Seward and it was 9 or 10 days. RSSC is country club casual which means he could go to dinner in a nice sweater and no jacket most nights. A sport coat would be recommended but no formal nights at all. The ship and every port was lovely. We took a float plane and a helicopter ride to the glaciers and we did do Glacier Bay, The College Fjords. The float plane ride was almost an hour each way and was one of the most scenic things we did. We took a zodiac to a rainforest and hiked with a naturalist. Some of the ports we walked around in. We took the Yukon and White Pass Railroad excursion. We wore Levi's all day and did get dressed for dinner since you cannot wear that kind of attire in the evening. We have it on our agendas to revisit Alaska again at some point. We did not do any post cruise tours.