From what I remember, the discount dropped around 4:15 or so on the morning of the 27th. So, it was a weird time. Everyone's first thought was to wait until midnight, then nothing happened, so we were all like go to bed and wait until morning. The key was, I knew if the modify button would work, I wouldn't have to wait for the phone lines to open. So, when I got on around 5:15 and saw that as an option, I was so thankful! So, check your existing reservation first, and continue to check it, to see if the option is there to modify, then if it is, you should be good to go as the "add free dining to your existing reservation" will appear and can then be added without having to call Disney and get put on hold!!!