Jacqueline Siegel paces the floor of her unfinished 7,200-square-foot ballroom. The former beauty queen, with platinum-blond hair, blue eye shadow and a white minidress, clacks along the plywood construction boards in her high heels trailed by a small entourage of helpers and staff.

"This is the grand hall," she says, opening her arms to a space the size of a concert hall and surrounded by balconies. "It will fit 500 people comfortably, probably more. The problem with our place now is that when we have parties with, like,...