We drove 3 hrs from Montgomery to spend some time at the park. Even tho the literature says you can see it all in 2 hours, it really takes longer with the crowds and if you want to read all the little plaques describing everything.
The ship has 3 self-guided tours. 2 of the inside (front and back) and a 3rd of the decks. It took us over an hour to do one inside and part of the outside. With kids, we stopped often for pictures and spent more time on some things than others.
You get a real idea of what a working battleship is like. This ship is all business! The quarters are very tight and there are no large spaces. Out on the deck is very nice, with a beautiful view of the bay and downtown Mobile.
The stairs in the battleship are narrow and a bit hard to walk down. Going up is no problem. Sometimes you have to wait while a group comes up before you can go down and vice versa.
The USS Drum was fun - it is really cramped! But to walk through a real submarine and get an idea of those conditions is special.
The airplane hangar was interesting and a unique opportunity to see many different aircraft. We aren't military buffs or very educated on the nuances of different military equipment - but were still very entertained, educated, and interested in the whole park.
The tanks are neat to see but you can't get in them or climb on them.
The gift shop is thorough but cramped. We didn't eat at the snack bar. The staff are very nice. There are many nice Gulf restaurants within a few miles - easy to get to and on the water. They were all crowded. We chose the Original Oyster House and it was perfect.