The hours for this vary from park to park and day to day. One park will remain open an extra 3 hours after posted closing time for WDW resort guests. One park each day will also be open 1 hour earlier then posted opening time, again for WDW resort guests only. You must get a wrist band for the evening EMH at the park that is to remain open that night by showing your room key, everyone in your party MUST have their key with them or they will not get the wrist band. For morning EMH you must also have your room key, but no wrist band is issued. Since this is no longer a paid special admission event you must use one day of your MYW pass to get into the park to start with.