I don't know how this would work at parks other than MK. I mean, AK doesn't have enough lighting to stay open late, so that park would be out. Gee, the safari ride would be real fun - you couldn't see anything! MGM would have tremendous lines at ToT and RnRC. Imagine everyone coming from the other parks to ride those rides - the lines would be longer than during the day! Epcot would be okay but would they still close Future World early? Would they still have all the countries open? Would it ONLY be future world? Hmm, all those people and only TT, M:S and S:E? I see long lines here as well. Would they limit the entry into MK like they do for e-ride nights? Would they keep all the rides open or like the EMH only open a select few? For 3 hours, it would be worth hopping from a full day at another park. So now we have triple the number of people from a normal e-ride and the same amount of rides open? At first I thought this was a great idea, but I don't know if this could logistically work. Plus, you would have to deal with the emptying of the park AND the filling of the parks at the same time. Seems like a lot of work to me...