What are some of the best things about a summertime visit to Mount Desert Island, Maine?

Mount Desert Island is wonderful in the summer, with some of the best things about it being a bike ride on the carriage roads, sitting on rocks at Little Hunter's Beach, eating lobster at Beal's Lobster Pier, going for a walk on Sand Beach, hiking up Champlain Mountain, browsing the shops of Bar Harbor, and driving the scenic Park Loop Road.