First time at a bike park — what should I expect?

I've been riding local trails for about a year and I'm finally planning my first bike park trip to Ray's Indoor in Cleveland. I'm a little nervous honestly. What should I expect? Do I need full pads? Is there a progression of trails for beginners? Any etiquette I should know about? I don't want to be that guy who's in everyone's way. Thanks in advance for any advice.