Saturday & Sunday, August 2 & 3: 13th Annual Heiva I Kaua`i Iorana Tahiti. A grass roots cultural festival filled with aloha, dance, music & great shopping. Two full days of Tahitian dance and Tahitian drumming competitions. Dance exhibitions, Polynesian artists & cultural demonstrations, Island foods and Polynesian crafts, plus a silent auction daily. Kapa`a Beach Park, Kaua`i. Gates open 9 a.m., festival begins at 10 a.m. Admission $6, children 6 and under free. For ADA and other festival information…