Yeah, don't skimp on the sunscreen. Don't forget the easy to burn places like nose and cheekbones. Glasses and at the very least, a baseball cap is highly recommended as well. The bigger the brim, the better.
Don't forget about reflective and non-apparent sun either! Reflective sun is the rays that get you reflecting off of the water (same effect with snow). That's a double hit because not only do you get zapped by the direct rays, you get the reflected rays as well. These reflected rays, because they are approaching from a lot lower angles, tend to cook your skin even when you are wearing a hat or in shade.
Non-apparent sun is what I call the sneaky stuff that zaps you on a lightly overcast day. The UV rays can still penetrate and nail you. What makes this worse is that during overcast situations, it's frequently cooler. As a result, you find out you've gotten tagged only when you get out of your suit at the end of the day and see the dreadful freckles!
Look into some of the more fashionable wraps for ladies. They cover a lot of skin area and don't make you look like an escapee from a garbage bag pile.
Beyond that - not much I can add. Hats, coverups and sunscreen.
Best of luck in your course!