I have to tell you what happened to me a couple weeks ago. My hubby and I were in line to eat at BOG. The window had about five people there. The main line which seemed liked a block long, was over to the right. I went up to the window, and told her I had an ADR for 1 (I was 15 minutes early). She told me I needed to come back in about 10 minutes, that I was early. I casually mentioned I had preordered if that made any difference. WOW! She told me to go right in on the left. I was seated immediately! Probably saved me a half hour to 45 minutes! Make sure you pre-order!!!!