I've booked the MK one (not the terrace, the garden viewing point, I forget what it's called) for our next Disney trip because 1) it's my birthday and I want to eat cake and 2) I would like to see the fireworks and show clearly without, as happened on our previous visit, waiting ages in what we thought was a good spot only for a very tall bloke to come and stand in front of us, ipad aloft, and film the entire thing, blocking our view.
It's only something we will do once and I think that it will be worth it.