It has changed. You can enter the park after 4:00pm and get a wristband. At 6:00 they close everything but Tomorrowland and ask the day guests to leave. You can go over to Tomorrowland and get on the rides there by showing your wristband. There is also a photo station open and the first show in the Tomorrowland Theater. Then at 7:00 everything officially opens back up, although last year we were able to go to Fantasyland around 6:45 and it was open.