we had a 5:05 reservation for the Yachtsman, and though we left the appointed 1.5 hours early, we ended up on a training bus for a new driver, and did not get there until 6:15 PM. Once we knew we were going to be late, we called the dining line, and they did say they would hold our reservation for 20 minutes, and if we arrived after that, they would seat us as soon as they could. The CM on the phone also said they would notify the Yachtsman. We arrived at 6:15, and the CM at the podium had indeed been notified of our delay, and we were seated immediately.