My family experienced Mickey's Not So Scary Halloween Party this past October, & we were seriously wowed by it.
I was amazed at how much the Magic Kingdom had transformed; the Cast Members had special outfits, fun Halloween music was playing, special effects lighting & everything just had a cute Halloween vibe to it! My family actually stood dumbfounded for a few minutes on Main Street just soaking it all in.
Almost all of the kids in the Park were wearing their costumes. My kids didn't have costumes, & they didn't feel out of place, so costumes are not required for this event. Upon entering Magic Kingdom a Cast Member gave us event wrist bands & Trick-or-Treat bags.
Throughout the park there were Trick-or-Treat stations set up for the kids to gather candy. My 6 year old daughter was so tickled by this she still talks about it!
A Villain themed stage show took place in front of the castle, a Halloween themed parade & fireworks rounded out the evening.
If your 5 year old likes Halloween trick-or-treating then this event could be worth it for your family. We are certified Halloween lovers in my house & now that we've experienced MNSSHP we don't want to miss it next year!
I hope that your family has a Magical fall trip to Disney World!