I would never do it with older kids or just adults bc it's so pricey, BUT...we just did it two weeks ago with a group of 3 - myself, my husband, and our 3 1/2 year old son. Pooh & Peter Pan were his two favorite rides before this trip and Seven Dwarfs Mine Train quickly became a new favorite - as I predicted it would. I couldn't get a FP+ for it, even at 7 AM 63 days out from our trip. Our 3 1/2 year old had unlimited access to his three favorite rides without having to wait. We were able to use our Fast Passes at the MK for other favorites of his that typically get long lines (Pirates, Tomorrowland Speedway, etc) and we had a great, stress-free morning. The breakfast was a bonus - we ate around 9:55 so it was breakfast and lunch. We brought snacks for the morning to hold us over until then. This was definitely a one time thing for us - the next time we go, our son will be old enough to understand waiting in lines, and that you can't always ride your favorite thing a bunch of times in a row, but for this trip, and for a 3 year old, it was awesome.
So in short, if you have really young kids who LOVE those 3 attractions, then absolutely do it. My son still talks about how he rode Seven Dwarves 6 times and how much fun it was. Also the breakfast wasn't terrible, and the setting was nice. I liked the vegetable frittata and my super picky my son liked the french toast.