Just learned that if you buy this ticket, you can check into the Magic Kingdom at 7:00PM. So, depending on park closings (10PM on 4/28 and 5/5 and 11PM on 4/14, 4/21, 5/8, 5/12, and 5/19), you can be in the park for a total of 6 hours or 7 hours.
This is a great option for 3rd shifters wanting to enjoy the park on their first day; I believe the price should be comparable to a regular 12-hour day park ticket, but they're supplying ice cream and sodas (so, there's where the extra $25 comes from).