My overall experience was great, but prepared for ...

My overall experience was great, but prepared for long line ups to view certain displays...It could go from anywhere 30 mins wait to even an hour long or more. One thing I would suggest is that you should prebuy tickets beforehead, my friends and I made the mistake of going there on the day of and it was sold out a few days ahead...therefore, plan accordingly! Also there was a long line up outside to get into the exhibition, about 30-40 mins wait, they let people in batches.