For a mix of shopping and gambling, the Gulfstream horse track’s new outdoor dining and entertainment venue, just over the Broward County line above Aventura, features an expanding list of businesses—Crate & Barrel, Pottery Barn, Williams-Sonoma, and West Elm, among clothing and accessories boutiques; bars; and restaurants including Yard House, BRIO Tuscan Grill, and American Pie Brick Oven Pizza.