On the WDW website, there is no place to manually input codes. HOWEVER if you use the "Special Offers" section, the codes are already "built in" there.
There are other ways to get to the "Special Offers" section, but I like to click on the "Tickets and Reservations" link toward the top of the WDW website on the right side, and then when the next page comes up click on "Special Offers" on the left side. That should bring you to this:
http://disneyworld.disney.go.com/wdw/tickets/packageListing?id=SpecialOfferListingPage
It will bring up a list of all the offers, and then go from there with the one you are interested in. Just be sure that you use the "Get Started" button that is within the deal details, and the code will be figured in.
For example, right now if I click on the first deal in the list, which is the "Value Resort Limited Time Offer" and then click on the "Get Started" button that is in the details of that offer, the next page shows:
"April to May Room Only Offer (
This indicates that the code is already "built in")
Enjoy this Room Only Offer available for travel between April 20, 2008 - May 21, 2008 at Select Walt Disney World® Resort hotels. The maximum stay for this offer is 14 nights. No group rates or other discounts apply"
and then you would continue there and enter the rest of the questions (dates, number of guests, etc.).
HTH!
