As Clark said, don't worry.
I remember my first trip to a park and seeing the pictures and videos before I went and I said no way!
The parts have easy roads throughout so everyone can get around. You'll watch other guys do stuff and have a huge amount of help from this group.
Come on out and watch and get a feel, but I can tell you a Rubicon is very capable in stock form,
and extremely capable with a little lift and bigger tires for some clearance.
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