Hello Suzi! Welcome to VPE! There are several types of discounts for MVCI owners, but these only apply when making reservations at the MVC properties. The first one is a points discount. This one is applied automatically to certain MVC owners when making reservations shortly before your stay (I believe is 90 days for the top 2 levels of ownership and 30 for the lower levels). You can find some more information about this topic if you do a search for it on VPE.The second discount is the one I believe you're referring to. This one saves you some money when making reservations at any MVC property through the Marriott.com website. This one might come in handy if you're looking to book a specific day at a property that you cannot book through MVCI because the inventory (for MVC) is depleted. All you have to do is search for the MVC property and days you would like to book through the Marriott. com website and select the special codes/discount option. Once you do, you will see a window where you type in the code and if it applies, you will see the discount applied to the rate. There are certain days that the codes won't work though, so keep that in mind. Also, the MVC owner must be present at check-in in order for the property to validate the discount.Hope this helps. Let me know if you still have any questions.