I've done the Horse and Carriage ride with my husband for our first wedding anniversary in November. It was truly amazing. Definitely worth the money! Nice trip through Riverside and French Quarter hotels. Very romantic at night.
Husband and I also did the Keys to the Kingdom tour through Magic Kingdom for Valentine's Day. Definitely amazing as well. Don't get too excited for the tour through the utilidor, it is definitely cool to be able to say you were below the Magic Kingdom, but don't expect to see anything too unique. The tour itself was amazing, our tour guide was informative, engaging, and humorous.
We have also done the Fireworks dessert party at Magic Kingdom. If you are not a huge dessert fan this will be just okay for you. My husband doesn't care for sweets, while I do, so I loved every second. We had a table in the first row on the far right. It was great, however you still want to stand at the railing to be able to have a nice view.
I truly think the experiences are great, and of course some people might say different, but heck I'm a sucker for anything Disney, and look at the positive in everything.
My next experience will definitely be Dining with an Imagineer. Just cool to be able to check one more thing off the Disney list.