Yochanan H.
Yelp
As others have pointed out, there is a $5 parking fee, which you pay at a booth at the entrance, which is occupied until 5 PM. If you only want to get photos of the magnificent ship at dusk and avoid paying the cost, I would go after 5 PM.
The ticket windows are outside, and they offer discounts for military and veterans. They won't ask you; so, make sure you have a military or veterans identification card.
The USS Yorktown CV-10 has two entrances; one entrance is level with the long boardwalk, intended for disabled visitors and volunteers. The other access is three flights of stairs up to the main hanger.
As you access the main hanger, you'll notice an assortment of planes, lots of planes. The main hanger had a newer exhibit called the Medal of Honor. It was almost like a museum within the museum.
Next, during our self-guided tour, I noticed that a couple of the passageways were closed for tourists. I didn't ask, but it appeared to be the case due to the current COVID pandemic. At that, everyone was keeping their distance and wearing masks.
As I toured the USS Laffey DD-724, I could not imagine being on that ship back during the Normandy invasion, or the numerous Philippines assaults, or the landings at Iwo Jima. Although, in my mind, the most horrific was being off the coast of Okinawa, when the crew had to fight off twenty-two kamikazes.
Also, please make sure you visit USS Laffey's combat information center (CIC), which is on the ship's top level. It has a holographic video with a reenactment of a cold war era fly-over.
Finally, they have a good size store for the USS Yorktown, located next to the ticket windows. They have plenty of souvenirs for the USS Yorktown, Fort Sumter, even the city of Charleston, but not much for the USS Laffey, which was a disappointment.