Possible creative solutions to this vexing dilemma:
1. If you're one of the dwindling minority of passengers without orthopedic or cardiovascular problems, use the stairs.
2. Spend 20 minutes or so exploring whatever deck your muster station is on. Maybe walk up or down a deck or two to explore them as well. Since after two weeks on a ship a significant number of passengers still don't know where the hell anything is, you can get a head start on your shipboard geography. Carrying the life vest too cumbersome? Put it on. It's a fashion statement.
3. Repair to the nearest saloon and have a drink.