aboy... it's not like prison... Prisoners get more free time

ok, kidding.
Be sure to pack a sense of humor.
Like others have said, there's plenty to do , and it's not ALL drudgery.
My S. enjoyed learning about off-shore sailing. Airsoft and paintball teams, rugby, waterfront stuff of all kinds, .. all sorts of things.
But, it's not summer camp. Don't let activities distract you from academics.
If you are very organized and disciplined, you may be able to balance several things. If not, learn to limit yourself QUICK.
KP is a phenomenal opportunity. But it will be what you make of it.
best of luck to you... get ready for a grand adventure.... white-knuckles all the way.