Designed to model a turn-of-the-20th-century American street (though it ends in a 13th-c. European castle), this is the gateway to the Kingdom. Don't dawdle on Main Street (it's filled mostly with shops and restaurants) when you enter; leave it for the end of the day when you're heading back to your hotel.
Mickey's Disappearing Act -- The Town Square Theater (located on Main Street, U.S.A.) is now the Mouse's new house in the Magic Kingdom. After recent refurbishments, what was once the Town Square Exposition Hall has been re-imagined to resemble a lavish turn-of-the-20th-century theater. The queue, winding along what appears to be a series of backstage corridors, leads to a rehearsal room lined with steamer trunks and stage props; it is here that Mickey (decked out in magician's attire) meets and greets his anxiously awaiting guests. And there's a bonus: Mickey's meet-and-greet is now a FASTPASS attraction. Keep in mind that FASTPASSES can (and most likely will) run out, often early in the day.
Note: In February 2011, Toontown permanently closed due to the ongoing expansion of Fantasyland. As a result, Disney's princess meet-and-greets (along with Tinker Bell's Pixie Hollow) have also been displaced. Until their permanent home is complete (the Princess Fairytale Hall, set to open at a later date where Snow White's Scary Adventure now stands), Disney princesses will meet and greet guests at the Town Square Theater (alongside Mickey), while Pixie Hollow (its status still uncertain) is slated to move to Epcot.
A Cut Above -- The Harmony Barber Shop, its entrance on Main Street marked by signature candy-striped poles, is a real working barbershop. It's open daily from 9am to 5pm and gives hundreds of haircuts each week. If your child gets his or her first cut here, Disney throws in several extras -- bubbles, stickers, a special set of mouse ears, and a certificate -- to mark the occasion ($18). Kids 12 and younger can get a cut for about $15; cuts for adults cost around $19. To jazz up the experience, kids and adults can add some color to their coif (thanks to a special colored hair gel) for just $7.50.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.