Expect to have a BLAST! I just went last month with Jason^ and had the time of my life. The accomidations are a little rough but you go there to wakeboard, not get pampered. Food was great, coaches are very friendly and knowledgable. Bring your own soap, shampoo, toiletries(besides TP) and a beach towel or two. Expect to met people from around the world. We had people from Sweden, Germany, Canada and the states. Like Jason said you will be sore and beat by wednesday. Stretching before and after sets helped me a little. You will go to OWC and ride the cable one day. Depending on where your level of riding is you will do some drills while learning new tricks if they see you are weak in areas. They pretty much ask you what you want to do each set and go from there.
Expect to meet people like Kyle Schmidt, Ben Greenwood, Chad Lowe, Billy Park, Amber Wing, Hayley Smith, Bob Sichel, Danny Harf, Kevin Henshaw and numerous other pros that I can't remember meeting. If your 21 or over deffinately check out the sports bar across the street and get a "Capsule"(and bring at least 2 friends, you'll see when you get there
Have fun! I'm already looking forward to booking my next week there!