I am going somewhat the same time, and it is hard to not be bummed about a "missed" discount.
I just look at it .. I booked the time and okay with the price without knowing if ANY discount or promotion is available. So if I can't get one, no loss, if I can get one . .bonus.
Besides, as Pete says --
free dining isn't really free. You pay rack rate and are locked into certain restrictions that may require you to pay more than you originally planned (stay an extra day, stay at a higher tier room/resort). There may be RO discounts that are even better value. I just never look at free dining as a perk personally because I know I can't (or don't want) to eat all the food offered. Plus the restrictions and the hassle of trying to get it, just doesn't seem worth the "potential" savings.
I am more looking forward to those RO discounts or any other promotions for my planned days.