The problem with WDW is that in order to truly appreciate it, one must allow their inner child to surface. 4 years old or 60 years old (myself), it is just a fun little show. To answer one of the original questions, there is no set schedule, it runs continuously. They fill the theater from one side while it empties on the other. The only time it has a wait time is if you happen to get there just after the show has started, then you have to wait until the next show.
That is what I was going to suggest. No one can tell you if you will like something or not, but, due to the fact that you feel compelled to even ask leads me to believe you will not find it worth it. I personally cannot comprehend how anyone can go to WDW and feel that the whole place isn't worth at least a one time look see. If you don't like something, file it away for the next trip, but, to just rely on someone else's tastes can cause one to miss some good stuff.
I never went to the World until I was in my mid 30's, with two kids and I thought it was funny, in a corny but amusing way. I guess what I have been trying to say here is...your on vacation, it's included in the price of admission, it's a cool place to sit for a few minutes, it's cute, warm and cuddly (except Al), and if you allow yourself, it can be funny. What do you have to lose? A couple minutes of high speed vacation time?