We went and asked as they were setting up and they told us 1 hour 15 minutes they will start letting folks in. We got there early and were about 4th family in line. By time they started line was wrapped all around. Am sure the 15 minutes was the buffer to let folks in and still get their full hour but they did not all get in that fast. We had our food and were eating when they were still letting people in for some time. I didn't want to give up any of my "hour party" time so am glad we arrived early. Yes the tables are preassigned so that was fine, it was the process of checking in etc.