You probably already know this, but make sure to log into your my disney experience account at least 10 or 15 mins prior to 6am and then click on "make dining reservations" at the bottom of the page. I would definitely 2nd or 3rd the suggestion to make the hard to get ressies (BOG dinner and lunch, Ohana, etc) for the 2 or 3 days last days of your vacation and make those your priority when you start booking. Good luck!