Unless you want to anchor in the outer harbor, you probably need to get there tomorrow or early Friday for any hope of a mooring inside or outside. We've made two day trip "fly bys" and one overnight this summer, the one time we went by on a weekend everything was jammed, and on our weekday overnight, the inside filled up by late afternoon and the outside by early evening. Fun place, but if you can wait 'til later next week, that may be a better bet.
George