Just did this yesterday in the rain, here's my 2¢...
Well worth it, we got to do everything DGS wanted to do in the allotted time prior to the hordes (no exaggeration, a woman literally ran around from behind me with a stroller, ran over my feet, to PARK A STROLLER!) arriving en masse.
At 9am we headed for HM, where there was already a significant line we were prepared to stand in. The CMs waved us into the FP line (not sure if they do this on many of the attractions between 9 am - 10 am, or it was pixie dust?) so we went from there to teacups to breakfast at 9:30.
Here is the only disappointing part of the morning. You had no choice, you could not order what you wanted. There was a LOT of waste.
Others here have remarked about how scant the offerings were for the cold items. That was not our experience, they seemed to have improved dramatically. Lots of CMs replenishing, and keeping the area neat and tidy. So A+ for the cold food, condiments, and CMs, C- for hot food.
We had been when they offered breakfast at Pinocchio's Village Haus, and that was a much better experience. Maybe the same food choices, but buffet style, so nowhere near the same amount of waste.
There were plenty of CMs keeping the tables bused and helping people with trays.
All in all, it was a great experience. We would absolutely do it again, well worth the price!