In 2006 we had reservations for 7:30 as well. As it turned out, we were just finished with our entrees when it was time for Illuminations. We were seated on the porch, so we had a perfect view right from our table. Our server brought our dessert after Illuminations was over. It was a perfect evening!
Others who weren't fortunate enough to be seated on the porch just came out and stood to watch. There is also a small area beside the restaurant, but that gets filled up early.