Aloha, brah! Strap your ukuleles to your haole backs and join King Kukulele onstage as the big kahuna makes a special appearance on the Oxbow deck for the Uke-a-Palooza
! If the tiny guitars irritate your eardrums, then head for the luau, including classic Hawaiian flatbread, ahi poke appetizers, Kahlua porchettas, and everything coconut, pineapple, or sea salt. Vintage printed tourist shirts are also on sale, so even from the mainland, you’ll feel like you’re sitting in a beach chair and kicking your flip-flops into the sand. Holoholo to this second annual Polynesian-themed festival on Friday, Aug. 10, at Oxbow Public Market. 644 First St., Napa. 6—9pm. Free. 707.226.6529.