I've already tried searching for the answer to this, so I apologize if this question has already been asked/answered....

I have an existing reservation in Orlando/MCO that's using BCD code X474200. Without changing the rate I've already "locked-in" with this BCD, can I modify the reservation and add a coupon??

I know that you can go to budget.com and change a reservation, but I'm not sure if it allows to you add a coupon...and I don't want to risk losing my rate until I know I can do it.

Thanks.