11. Take a boat ride

Just like the monorail, Disney's transportation boats are free to ride. Take the loop around Crescent Lake, and you'll get a look at Epcot, the Boardwalk, Disney's Yacht and Beach Clubs and Disney's Hollywood Studios. Alternatively, you can cruise from Port Orleans to Downtown Disney and back.

12. Watch the entertainment at Disney's Boardwalk

The Boardwalk area comes to life in the evenings, when street performers such as jugglers, comedians and fire-eaters come out to entertain guests.

13. Have a day at the beach

Image: Disney

There are beaches all over Walt Disney World, including at many of the resorts. You can't swim in the water (you don't want to get munched by an alligator), but there's no reason why you can't build a sandcastle or eat a picnic.

14. Enjoy a campfire cookout

Head to Fort Wilderness any day of the week for a free nightly movie and sing-along. You do not need to be staying at Fort Wilderness to attend, just show up ready to enjoy a movie under the stars. Your night begins with a fun half hour of old fashioned live campfire music with hosts Chip and Dale. You can roast marshmallows over the campfire, enjoy the music and then relax for a full length feature. Movies vary from High School Musical-type teen films to Pixar animation and classic Disney movies. There is no admission fee, and you can drive, or take a bus or boat to get to the campfire.

15. Take a tour of two amazing restaurants

Disney's Animal Kingdom Lodge is one of Disney's most unique hotels - and it boasts two excellent, African-themed table service restaurants: Jiko, The Cooking Place and Boma - Flavors of Africa. It's possible to learn more about the culinary delights on offer at these eateries by joining the Animal Kingdom Lodge Culinary Tour. The tour is led by two of the Lodge's Cultural Representatives, who come over from Africa to work at Walt Disney World for a year. You'll receive a short tour of the Boma restaurant area, and learn the story behind the decor. You'll then be taken along the buffet line, learning about the African influences on the different dishes on offer. Next you'll move over to Jiko, where you'll take a tour of the main bar and dining area. Finally, you'll get to taste some free samples! The tour takes place at 4pm daily, and it is not possible to make a reservation. Simply show up at the Boma podium in the Animal Kingdom Lodge. The tour last 30 minutes - but it's worth checking in advance by calling (407) 938-3000 to check the tour schedule.

16. Hunt down some wildlife

There are all manner of cuddly (and not-so-cuddly) animals roaming around Walt Disney World, as we highlighted previously. One of the best ways to try and spot some of them is to take a walk along the path between Disney's Wilderness Lodge and Disney's Fort Wilderness Resort, where you might spot birds, deer or any number of other creatures.

17. Learn about an amazing hotel

Many of the tours at Walt Disney World are very expensive. There are several free tours on offer, though, including the Wonders of the Lodge tour at Disney's Wilderness Lodge. This free, one-hour tour teaches guests about the design and architecture of the resort, as well as the neighboring Wilderness Lodge Villas. There's no need to be a guest to take the tour, just turn up in front of the Grand Canyon Fireplace in the Lodge's lobby at 9am, Wednesday through Saturday. The tour takes in the railroad museum and geyser mentioned earlier in this article, so you can kill three birds with one stone.

18. Play with some LEGO

The sprawling LEGO Store at Downtown Disney is home to an enormous 3,000-square-foot outdoor play area, packed with thousands of LEGO blocks and some huge LEGO sculptures. The first Tuesday of each month usually sees the store host the Monthly Mini Model Build, which sees kids from 6-14 building and taking home a FREE mini model. You can check out upcoming events on the store's website.

19. Play volleyball

Most of the resorts that have beaches also have volleyball nets - talk to a lifeguard to get hold of a ball.

20. Listen to some jazz

The lobby of the Grand Floridan Resort hosts the Grand Floridian Lobby Society Orchestra, which performs nightly. You can find out performances times by visiting the Walt Disney World website.

Share your tips

What are your favorite free things to do at Walt Disney World? Let us know in the comments section below!