I just got off the line with a nice cast member who informed me that unless the park reaches capacity, they will allow entry to the park for the whole night. She also let me know that Disney parking was available all night for the event. And based upon space, all available lots will be open as well. So that is a small bit of additional information!
(And before I hung up I quipped, "Who do I call to find out about what rides are operating that night," to which she said without missing a beat, "Only Mickey knows right now, but hopefully we all will know soon!" I just love resort cast members! Even calling is a magical experience.)
Pssst...is anyone else getting excited too?