I think you will do just fine in the tent. I would use a pack-n-play to sleep in as it will keep baby off the ground. You may also want to look to a site further away from the main roads and the comfort station. We found the closer to the road the more vehicles and loud garbage trucks you hear at night. We have added a small CD player to add some music and drowned out the noises a bit.
You may also want to bring an EZup type shelter for the daytime or a tarp and some rope. If your site is not shaded well you can setup the shelter and still have a nice cool area for baby to relax and crawl around. Speaking of crawl around. You may want to bring a nice outdoor blanket to play on. It could also get a bit warm so nap time in the tent may be a bit hot.
Last, but not least, my family will be there from Nov. 30th to Dec 10th. I have one 16 month old and one 3 3/4 year old. Not sure where we are gonna be but if you send me a PM I would be more than happy to give you our site number and the kids can hang out.
Have a great time.
Mark