If your a veteran you and three other folks can be admitted with out standing in line . Of course you must have your veteran lD.
Yes. All Smithsonian museums are open every day of the year, except Christmas Day. I just checked museum's website. July 4th looks like a "no". The museum's website offers free advance timed entry tix. These tix are released on 1st Weds of the month. They are booked til Sept 2018. At 630am daily, website releases a few tix (you cant choose entry time) but tix are gone immediately. You really need to plan waaay in advance to visit this museum, sorry.
Yes, but you need to get tickets in advance, and the time for tickets for July has passed. There are a limited # of tickets available each morning online, and in person before the museum opens. These can be very difficult to get, so I would not plan a trip solely around the museum as you may not get in.
Yes. Go to the museum website for this type of info and more.
Yes.
Plan to get your tickets in advance the trip to the museum is worth it
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