Great museum, but make sure you allow yourself enough time to check out all of the exhibits (or else pace yourself and hit it up over a couple of days).
There is a lot to see. We saw the museum towards the end of a busy day, and probably did not appreciate it as much since we were all tired. Would recommend at least 2-3 hrs. minimum earlier in the day. There is a subway stop right in the basement of the museum, which is very convenient. Although if you have pre purchased tickets( Viator), you can not go in that entrance. You have to leave the subway area, go upstairs and around the front of the museum to the main entrance. Then you stand in another line with others who have pre purchased tickets.
Great visit in New York you do need a full day to do this trip though