I'm avoiding all NYC's RNC madness this week with a quick trip up to my favorite island, Nantucket. Spent all my childhood summers up here, but haven't been back in 5 years or so. Any favorite places to recommend? Not looking for super-fancy (since I'll be on my own), but tasty fare and of course, good seafood! Any breakfast recc's (besides Downyflake doughnuts?)? thanks!!