I'm not sure how it works with a party of six, but every time I have made an 11:30 (first of the day) reservation, I arrive by at least 11:15 and request a water table. The last 3 times, when I request the water side table, the hostess has told me the 11:30 reservations all get a waterside table. I will keep making 11:30 reservations and keep requesting a waterside table. My luck, the one time I don't they will not seat me there.