Woohoo! I just saved over $1000 for our group.
DS and I did this in January, and it was great (although his class didn't make and our trip dates did not allow a replacement - Disney still allowed us to use the discounted park tix). The only issue I had was picking up at will call at MK. The line was long, it was HOT, and when we got to the window, they tried to charge me a second time. I had to get the CM to make a few calls before he believed the receipt I gave him marked "paid in full."

So it took about an hour from getting off the MK bus to actually getting into MK. But other than that, this was a great program and we felt very lucky to participate.
Fast forward to last night. I stumbled upon a post on DIS about the program, and then decided to look into it for another trip (assuming open enrollment would still be Jan and Sept.) So I go to the previously bookmarked registration page and get the "enrollment is closed, click here for information on summer open enrollment."
I have a grand gathering planned in June, and, by a stroke of luck (we'd originally booked for two weeks earlier), we will be there for the start of this program

Our kids will love the class (so will we moms

), and our DH's love the savings. We are purchasing 8 seven-day hoppers and signing up for the oceans class, all for $1400, which is about $1000 less than we thought we'd have to spend, plus we get to turn the trip into an educational opportunity (BWAHAHAHAHAHAHAHA). Combined with the 40% PIN I had for the cabins, this is turning into a great deal!!!
Thanks DIS for helping me make this an amazing grand gathering!