Mickey’s Not-So-Scary Halloween Party at Disney World's Magic Kingdom

Guests of all ages are encouraged to come in costume, and the park’s streets are teeming with people outfitted in clever garb.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

One of the highlights of the party, Mickey’s Boo-to-You Halloween Parade is packed with 175 performers.

The event’s show, "Hocus Pocus Villain Spectacular," reprises the Sanderson Sisters from the live-action movie starring Bette Midler.

Held on the Cinderella Castle Forecourt stage, the show features favorite Disney villains including Dr. Facilier, Oogie Boogie and Maleficent, along with dancers, projections and special effects.

Now in its fourth year at the Halloween party, the show, like the film, includes music, lots of comedy, and a touch of villainy.

There are lots of characters, including some of Disney’s more obscure ones, available across the Magic Kingdom to meet and greet visitors.

As is the norm at the parks these days, some hold court in designated places, and cast members help keep the proceedings orderly.

In a return to a mostly abandoned Disney tradition, many characters roam the streets and welcome chance encounters with guests.

The Cadaver Dans perform in Frontierland.

The "Happy HalloWishes" show features animated villains and offers synchronized pyrotechnics that light up the skies above Cinderella Castle.

Like most of the nighttime spectaculars that Disney presents, the show includes digital projections.

One of the selling points of the separate-admission nighttime event (which costs $75 to $125 for adult tickets, depending on the date) is that attendance is limited, and lines are kept to a minimum for the select rides that are open.

Pirates of the Caribbean gets a Halloween makeover this year with the introduction of Gunpowder Pete, a live actor inserted among the animatronic buccaneers.

The Mad Tea Party features trippy lights and effects to accompany the spinning teacups

Whether they are in costume or not, visitors can go trick-or-treating at locations throughout the Magic Kingdom.

The park provides bags, and cast members are generous as they dole out fistfuls of candy treats.

The park entrance.

Sunset over Rivers of America.