Congratulations! I go for the weekend every year. First off be prepared to walk a lot. I'm not sure how flat it is where you live but the television does not do a good job of truly depicting the elevation changes there. But it may just be my perspective since it is so flat where I live.
Do all your shopping soon as it does go fast, and like mentioned before there is a little sticker shock. Good for Christmas shopping. There is NO sticker shock in the concession stand, the food is great and cheap. I eat about 10 pimento cheese sandwiches and drink about 10 beers and spend less than taking my kids to burger king.
I like to pick a group and walk on Saturday. On Sunday I go 15 and sit for most the round.
Enjoy, it is a magical place!