You don't need a reservation and you can park at FW. Just tell them at the gate that you're going to the Chip and Dale Campfire Sing along, they'll tell you where to park. You'll park in the large main lot by the settlement and you'll have to take the internal bus to get to the campfire area. You don't need to park at TTC or DS or anywhere else to go to the campfire you can park at FW. The campfire sing along is open to everyone, it's free and you don't need a reservation whoever told you that is wrong. We did this our last December, the kids had fun making s'mores just remember to bring your own chocolate, graham crackers and marshmallows if you want to make s'mores. You can buy cheap sticks to roast marshmallows but everything else is expensive.