Avenue Q, which cleaned up at this year’s Tonys, is buying the typically lucrative national tours that follow Broadway success, and taking up residence in Las Vegas. “Working with the Las Vegas impressario Steve Wynn, the producers of “Q” plan to open around Labor Day 2005 in a new $40-million theater built especially for the show. The production had planned to follow the lucrative tradition of touring nationally, hitting major markets like Chicago, Atlanta and Los Angeles.”