I've been there three times, and one piece of advice I give everyone going for the first time is to be aware of your surroundings. Crazy **** happens on that lake, and especially Party Cove, every day.
Do not, under any circumstance, dive into that water if you anywhere close to the shoreline. Remember, tjis is a man made lake, carved out of rock and the water is very murky. You drop your sunglasses, let 'em go, Man. I saw a dude go in after his, and never came back up.
Tie up to another boat in the middle, and be careful if you plan on jumping on other boats. Slippery surfaces plus blind drunkeness do not make a good combination. Saw a girl slip in between boats, smack her head and fall in between. She was lucky a guy was right there to grab her and pull her out, or she wouldn't have made it.
Sorry for the downer stories, but I think everyone should hear them. You'll make your own great memories, just be sure you come back to share them. It's a great time, but things like this can, and do happen if you're completely careless down there.