I have to agree with those saying that the 7PM ADR would be cutting it close. One thing that you can do (that Kevin has always described on the podcast and I am a believer in) is tell your server what experience you are looking for. If you stick with this ADR and you do get seated early or on time, be sure to let your server know that you are hoping to be done by 8PM, 8:15 at the latest. This will help them to guide your experience. Also, if you are skipping the drinks, apps, and desserts and just looking for a dinner, you might be fine with the timing. Personally, I think I'd avoid that stress and either try to move to something earlier, or take a ressie for 6:30-7:00 at DTD. Good luck!