The tickets we got here allowed us access to all the "Extra" shows we wanted to go. We still needed to stand in small line to get the Real physical tickets but the line is separate and the wait was about 5 minutes only. Amazing experience!
If you're from the UK, or have visited it, this is similar but not as good as the Natural History Museum. It's immense but holds the same number of exhibitions etc than other smaller sized museums. The additional paid exhibitions aren't really worth the extra money but the butterfly one is.
It was a great tour. One could spend days in there. The ticket taker had a little trouble with our vouchers. He said that your vouchers were a bit confusing. Another agent helped him with them. It was nice to get the senior discount. Thank you.