Update (6:00 pm ET, Sept. 28): This sale has been extended for bookings through Tuesday, Oct. 2. 

For $899 per person, hop aboard the world's largest cruise ship and set sail in a balcony cabin on a weeklong Caribbean cruise.

Sail on Royal Caribbean's Oasis or Allure of the Seas and cash in on $350 in extras. 

Sail roundtrip Fort Lauderdale in a balcony cabin and save as much as $170 per person on current rates:

• $899 ... Dec. 2 (Allure); April 13, 27 (Oasis)
• $929 ... Nov. 4 (Allure)
• $999 ... Nov. 10; Feb. 2, 16 (Oasis) or Oct. 28; Nov. 18; Jan. 27; April 21 (Allure)

This deal comes with the following extras:

• Prepaid gratuities
• Dinner in a specialty restaurant for two
• $100 onboard credit per cabin to use on anything from margaritas to massages

Both ships boast unique features such as a zip line, a boardwalk with a carousel, an outdoor "Central Park" with upscale dining and shops, an ice-skating rink and a 3-D theater.

After a day of island hopping to tropical ports such as Jamaica, the Bahamas or St. Maarten, unwind in one of the ship's four pools or 10 whirlpools and choose from 25 dining options.

Note: Taxes are an additional $110-$123 per person depending on the sailing date.

Click here for more information. Book a balcony cabin or higher on any seven-night cruise on the Allure or Oasis in 2012 or 2013 to get all of the extras listed above in this sale. Additional dates for these seven-night cruises also are discounted.