Less than two miles down the road from Disney's Magic Kingdom, the 200-acre Orlando World Center Marriott Resort is a family-fun playground of its own, boasting six swimming pools (two just for kids),  a 106-foot waterslide, daily poolside activities (think dive-in movies, beach ball drop, hula hoop contests), a sand play area, arcade, spa, golf, nearly a dozen restaurants and lounges, and courts for tennis, basketball and volleyball.

With the resort's Orlando Vacation special, guests staying a minimum of four nights will save 25% off the nightly rate. We test-booked this offer on a four-night stay in March and found a nightly rate of $172 for a standard, resort-view room—which does work out to be a 25% savings off the regular rack rate of $229.  The catch with this deal, though, is that you have to pay in full when you book; you can change your travel dates but you won't get a refund if you cancel your stay.

Not comfortable with that level of commitment? We spied another option: a 4th Night Free offer. (You won't find it on the website's "specials and packages" page, but when you plug in dates for a reservation, it will appear as an option.)  The nightly rate is $229, but with the fourth night free the rate averages out to $172 each night.  That means you'll still get the 25% savings, but you'll be able to cancel up to three days in advance of your stay if your plans should change.

Both offers are good through September 30, and blackout dates do apply.  Book online or call 800/380-7931 and use promo code "PRO" or "4th night free."