Check the weather forcast. Expect spray and potentially wet weather. But remember, there's no such thing as bad weather, only improper clothing. Dress warmly, dress in layers. Wear water resistant outerwear.
Fleece is particularly good as a layering material.
The race course will be set up so that there is excellent visibility from land. Spectators are encouraged to attend. Stay as long as you please. If you've got binoculars, bring 'em. Please RSVP by Friday 8pm to Bob Dreyer , so that we have an idea how much food to provide.