In the past, we always say that we are gonna do them, but end up bringing grandparents, who don't want too. Or someone will get sick, or something. So, we've only done them a few times, however when we DO them...I think that they are really fun and beneficial. My favorite is the late hours at MK and EPCOT, because there are so many rides there, that might normally have long waits, but if you do them at midnight, then you basically walk right on.

I suggest going in to AK early though, if they allow it one of your days, because all of the animals are out during Kilimanjaro's Safari and there are shorit lines for EE and such. Good luck!! Hope I helped a little!