Absolutely recommend the Skip the Line tour! Our 10:45 start time worked out great because all the lines outside for the 10:00 museum opening had already cleared, so we just had a 1 minute wait at the security line. Our tour guide Katie was wonderful - entertaining, inclusive, informative, kept us moving, and covered an impressive variety of exhibits. She projects her voice very well, so it was easy to hear her even when she had to compete with other groups. Three hours covers a lot of ground and about 1000 years of history, but it goes fast and its really a relief not to have to try to figure out where to go and what to spend time on in this huge museum.