I usually call to redeem my points, because I need an aisle, and they'll always try to accommodate. It's usually right around premium seating, but depending on the popularity of the show, the producers will block out seats. For example I tried to get second row center for Company in January, but they could only do first row.
"Hey little girls, look at all the men in shiny shirts and no wives!" - Jackie Hoffman, Xanadu, 19 Feb 2008