There will be reduced hours during the week. Typically 9-8 on non MHP weekdays and 9-6 at DL on party weekdays. Then longer hours on the weekends, except Friday party dates. The first party is on Friday 9/23 then every Monday, Wednesday, and Friday until Halloween. The party requires a separate ticket otherwise you gotta get out when it starts and head to DCA. If you are going to be there for a party day you could buy tickets just for the party and reduce the number of days for your park tickets and maybe save some money.