Tour a battleship! Be a spy! Save the world! There really is something for everyone. The kids, or the kid in you can have fun decoding clues that take you all over the USS Wisconsin, a battleship that saw action in WW2, Korea, Vietnam Nam, and the First Gulf War. If you don't want to play spy, you can choose one of three tours (or all three if you're physically fit) and see the battleship from bow to stern, sit in the ward room, see where the sailors slept and their post office where they mailed their letters home. Guides are knowledgeable and friendly, and have a sense of humor!
In addition to the battleship there is a museum that takes you through the history of the Navy, with movies, displays, uniforms and relics.
A word to anyone going: make sure you wear well broken in, comfortable shoes as there is a LOT of walking. I would recommend rubber soles as well as spots could be slick. Bottled water can be purchased on board as well as inside Nauticus for $1 if you don't bring your own. And you're allowed to take pictures unless otherwise waved off.
We saw several people in wheelchairs, but the main deck is the only accessible place for wheelchairs and strollers. Tall men (and women) watch your heads (the one on your shoulders) and yes there are heads on board (bathrooms). The wardroom, heads and parts of the ship are air conditioned, but bring a hat because the main deck is sunny and hot, hot, hot.