Hi there, Virginia! Thanks for visiting the Disney Parks Moms Panel and asking your question!
I'm delighted that you are planning to attend
Mickey's Halloween Party this fall! I just checked with a Cast Member who confirmed that tickets for this special event will go on sale to the general public on June 12, 2018, at 7:00 a.m. Pacific time. While I do suggest that folks get their party tickets well in advance, if you happen to sleep in on the 12th, I wouldn't worry too much. Last year all the party dates did eventually sell out, but not on the first day they went on sale.
Keep in mind that your Mickey's Halloween Party ticket grants you entry to both parks up to three hours prior to the party start time. So you could absolutely start your afternoon over in Disney California Adventure Park to check out the Haul-O-Ween makeover of Radiator
Screams including riding Luigi's Honkin' Haul-O-Ween and Mater's Graveyard JamBOOree. Then try out Guardians of the Galaxy - Monsters After Dark before heading over to Disneyland Park for the actual party.
If you have any other questions about
Halloween Time at the
Spookiest Place on Earth, please stop by again!
-Linda