This was a great place to take our 7 year old grandson. SO MANY things to see and do. HOWEVER, we were disappointed about the Groupon because we got to the science center right when they opened and saw that the Groupon price was for the normal, everyday price to get in??? How does that make sense? The regular price that Groupon lists is exactly the amount PSC charges for "Regular Price plus IMAX" tix, but the Groupon doesn't include IMAX. Another thing that PSC needs to change is the line. If you have pre-purchased a ticket (like a Groupon) you shouldn't have to wait in the regular line. We were there when the place opened and had a 1/2 hour wait because everyone is in the same line. Hard for an antsy 7 year old who wants to get the exploring started. Plus, by the time we got to the counter, the Planetarium Show we wanted to see was already sold out. There is no advantage to pre-purchase tickets that I can see.