Here is some info that I wish I would have known before I went, hopefully it will make your trip/cruise a bit easier.
The car and ticket check in with security were very easy and relaxed. Just join the queue of cars, pull out your bags onto the pavement , sign your keys over to the waiting staff and walk to the terminal, your bags appear by magic at your cabin shortly after. Our cabin on b deck is as small as a two star hotel but there is a big space under the bed for cases. The notice left on our dresser for freedom dining said we had to be at a specific restaurant at a certain sitting, which we later found was at 8.30 but apparently we did not have to go to that restaurant and could eat somewhere else if we liked at extra cost if using another restaurant or the buffet at no additional cost.
There was ample wardrobe space for two of us for two weeks in a chilly Baltic arena.