We saw the musical during Thanksgiving week (it was actually the Sunday prior to Thanksgiving). The show wasn't officially advertized on the daily bulletin, but we walked by and it was open. They had several shows during the day (maybe 5?) and each one had an absolutely, daunting line. We got to the line about 15 mins before the show started and although they were letting people in, the end of the line was still well past "Dinosaur Sue". I didn't think we'd get it, but we did and there was still loads of people that got in after we did. The reason I mention this is because the shows will be jam-packed, but it's amazing just how many people can get into the theater.
We were in the lower section, but too far to the right. I agree with others that you should try to be more in the middle as there are some things that are happening up on a platform on either side of the stage and since we were on the right, we couldn't see the platform on the right.