From Facebook event page:
Saturday, November 5 - Celebrate with us!
10:00 am: Opening Ceremony
12:00 - 4:00 pm: Meet Mickey Mouse and Minnie Mouse on Level 2, above Ice Rink, near Neiman Marcus
RSVP, tell your friends, and don't forget to bring your camera!
Characters alternate every 30 minutes. Character appearances are subject to change or cancellation without notice. Call store for more details.