This was one of most romantic meals DH and I have ever had. We waited for a patio table and got one right on the water. Ordered cheese and fruit, salad and wine, had a nice dinner, then dessert and coffee. Just as dessert was ending Illuminations was beginning and we had front row seats. We actually ordered another coffee when it was over and waited for the crowds to disperse. The walk back to the hotel was amazing; it was so romantic walking through World Showcase at night when the place was relatively empty.
It was suggested to us to get a 7:30-45 ADR in order to attempt to get a patio table. At that seating time you are allowed to stay and watch Illuminations.