Congrats on winning a first time cruise. As hikers you can plan to do a lot of walking. Your ship is big. We get our exercise by not using the elevators. Depending on your cabin location you can be looking at 6 to 7 deck changes from one venue to another. Also your ship has a great walking deck (teak) and a fine gym. We like to find another couples with similar interests to do the shore thing with. Your ports should be easy to navigate due to your schedule. HAL will give you a "port sheet" for each port listing the best sites to see. Also the "port talks" listed in the daily schedule are helpful and can be seem on your tv so you don't have to cut into your day. Have a great time.