Just went with family to the Intrepid and had a wonderful time. If you’re considering a visit, you should also know that they have on display the USS Growler, one of the last existing Grayback class subs. This was a nuclear-armed, diesel-powered sub from the cold war era (early 1950’s). Don’t go in if you’re claustrophobic though.
There were only two of those deisel SSGN’s built, using the Regulus missile.
The other was converted to an amphibipous assault sub in the mid 60s for special forces and used until around 1980 I believe, then decommissioned and scrapped. The USS Growler is the only one left.