We went during a school holiday and in the afternoon. It was quite busy and shows were almost all sold out. I would try and purchase tickets to the museum in advance, the movie and the submarine tour the day before.
Avoid weekends, school holidays or other holidays, if possible. Otherwise, go early in the morning or late afternoon to avoid the crowds.
Looking for fun things do in New Orleans with kids? This half-day itinerary will not disappoint. You’re in New Orleans of course, so the day must start out with beignets. Begin at Café Beignet for New Orleans’ famous deep-fried treat and coffee. Next, walk or catch a ride over to the National WWII Museum. The museum is amazing and wonderfully interactive. It combines education and fun so that it is engaging for people of all ages. Neither you, nor your kids, will be bored at the World War II Museum. A memorable day for the whole family in the Big Easy.