Hi Victoria!
Welcome to the Disney Parks Moms Panel.
Mickey's Not-So-Scary Halloween Party has become one of my favorite times to visit Walt Disney World Resort and I'm so excited for you to experience all the fun with your little one!
Historically, you will see the Mickey's Not-So-Scary Halloween Party
dates and prices released in the spring, with this past years announcement in mid-May! So I'd make sure to keep an eye out on the Disney Parks Blog for more information. In 2017 the dates were August 25 & 29 and September 1, 7, 10, 12, 15, 17, 19, 22, 24, 26 & 29. While we won't know for certain until they are released, if you are visiting for a couple days, one will likely overlap with your stay. You'll find that prices are slightly lower earlier in the season and during the week. Weekends are more popular, as are dates closer to Halloween where you will see an increase in pricing.
I hope y'all have a spooktacular time! Please let us know if you have any other questions before your trip.
-Lindsey ºOº