Disney extras I have done:
MNSSHP--I have done this twice. First time was with all my kids (ages 4, 7, 10 at time). We all loved it, but kids were really dragging at the end. I did it again with dd (age 11) this past fall. Absolutely would do it again--we had so much fun.
Keys to the Kingdom--Just did this in January and highly recommend. It was 5 hours and I thought a bargain compared to some things at WDW.
Wild Africa Trek--Just did this in November. This is my favorite thing I have ever done at Disney. Pricey for my family, but very worth it.
Pirates and Pals Fireworks Cruise (I think this is what it is called)-- It leaves from Contemporary. We did this when my kids were still pretty little. It was a little chilly (in January) but we had a blast. I probably wouldn't do this again since my kids are older. Very good if you have a Peter Pan fan.
My Perfectly Princess Tea Party (at Grand Floridian)--I did this with dd on her 8th birthday. We had fun, but that is the oldest age I would recommend.
Bippidi Boppidi Boutique at MK - I had to let dd do this once even though that lacquered up hair and glitter is so not my thing. She loved it and I was glad I only had one daughter.
Wonderland Tea Party at GF --DD and my youngest DS did this together (I think she was 7 and he was 4). It was only maybe 1-1.5 hours long? The photo pass pics were awesome and dh and I had a nice drink at the club level lounge while they were there.
Moonlight Magic at MK - Just did this in January. Technically it is free to DVC, but thinking about how much I have spent one DVC, it no longer seems free. It rained hard during the event at first, but we had a blast (that may have been due to the fact that we were childless also). We plan to all go to the Moonlight Magic at Typhoon Lagoon in May.
Things I haven't done:
MVMCP - I want to do this since we love the Halloween Party so much. When I was there this past November, they did not run the party that week. Looks like this year will be the same since it is the week before Thanksgiving. Not sure when I would ever make it since I don't plan to pull kids out of school for Disney trips anymore.
Dessert Parties-- These sound neat to me, then I look at the price and don't see the value. I love dessert, just not filling up on them. Then coupled with the whole "My family and I don't like fireworks". I should say we like fireworks because it makes the ride lines shorter during the display.
Backstage Magic --The 8 hour tour. This is on my to-do list on the next adults only trip.