That is cool! I'd love that job.. being a tree!
I'd probably get fired the first day though cause I'd chase people and scream at them about their inn tables and how that was my uncle.... or I would fall in love with a real tree, as a joke, and come to find out there was a squirrel hole, which didn't make my case of "just kidding" any easier to explain to the park's director.
Or better yet, dress up like a tree in the parking lot, walk in through the gates after explaining you are their to try out for the "Sycamore part" that you found in the classified ads. Once inside, lit up a cig, even if you don't smoke. Follow the tourists and tell them, before they see the other trees and rock people, where they are blending in and ruin the excitement. When the guards come, and they will come, go limp. As they drag you out screem something about eqaul rights for all trees and the forest environmental problems are because of people like these guards.