can someone just clarify something for me?

(I'm sure this is a really dumb question) I'm a "plan things way in advance" type of person, so I booked at All Star Movies for the week I'm there (President's Day leading into the Princess Half, ughhhh it'll be so busy) because I wanted to make sure we got a room. if/when a discount is announced, will they just apply it to my reservation if I call and ask? or would I have to switch to a different resort, or lose the deposit I made at ASM? (I used a gift card for the deposit, so it wouldn't be the end of the world I guess) I'm sure all you Disney pros are rolling your eyes at me lol. EDIT: I think I actually just found my answer in another thread! woop.