We were the last ones of the day to have our photo taken. The photographer said to allow 30 min. We got in a very long line, when we got to the front, the clerk was irritated and told us it takes several hours!
For us, it was not worth the wait in line for the actual print. They give a 5x7 which we can purchase from MPIX for $1.29. Next time, we would do the meet and greet to get it added to our photopass but only get the print if the line was pretty short at the camera shop.