Boston Chowhound spending two weeks in Hawaii in July, splitting time between The Big Island and Kauai. I'm looking for recommendations for places the locals eat. Hoping to find great food, good atmosphere, the "real" Hawaii. Or two out of three wouldn't be bad. Also, on Kauai, are there places to get fresh fish right off the boat that we can buy and cook in our condo? On either island: Is there one place, or dining experience, we absolutely should not miss?