Well first off, there IS in fact a complete vacuum system in DarkKastle, it is not only to protect the very, very thin screens and keep them in place but it is also used for the "air blast" special effect near the end of the ride. Secondly, the generator that powers the the vacuum system is NOT big enough to power the entire park, but there are back-up generators that do have the capacity to power the most important rides/attractions incase of a power interuption, which are not located anywhere near DarkKastle. I unfortuantly can not release how I know some info that others do not, but please believe I know some facts. 12 MORE DAYS TILL PREVIEW!!!!