You will def have to add in the 15 or so mins mentioned to the total experience BEFORE you enter the workshop. My reservation was @ 8:15 and did not walk into the workshop until 8:25, YMMV but there was a small 5 minute or so intro that a CM came out and talked to us about the workshop and what we were there for, it was a scripted story and helped build up the experience. We were in the workshop for about 25 more minutes in total, such fun, have fun!!