Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!
casualBasic etiquette is easy, and the mere fact that you're asking these questions means you're the type of person that will never have an issue with this anyway.
Couple things:
In a busy park, you should call your "drop" at the top of a jump line or rail line. It doesn't have to be a big deal but just look around when you're ready and just give a quick "dropping" to let others know you're headed in. If it's quiet and not many people, it's no issue, just be aware.
Don't stop in landings or in runs. Step to the side if you are hiking or whatever.
Do NOT side jump the features and lips for rails. Now if you're prepping to try an urban rail or something it's totally fine to ride up once and pop off the lip to get a feel for the takeoff and to gauge what speed and pop you need, but don't make a habit of it and make it clear what you're doing.
Enter through the gates and read the signage.
No issue asking people for advice or asking to follow someone into a jumpline in order to get the speed needed dialed. If you're friendly and cool and whatever you'll have no issues.
Respect park crew and patrol. If park crew or patrol closes a feature just respect it and don't give anyone a hard time.
If you are on the knuckle of a jump or feature be to the extreme edge to not interfere. If you stand there, help those preparing to drop in by making an "x" over your head if someone fell in the landing out of sight and make an "o" with your arms when they're clear.
If you're hiking a feature in a line of other features that's fine, but yield to people hitting all the features in a flow/line. So when you hike and step back in to hit a rail, look uphill and make sure no one is coming in hot behind you. And if they are, get out of the way!
If you fuck up a takeoff or mess a feature up or notice that a screw is popping out or whatever, let park crew know and let other people know.
Just be happy, positive, friendly, pay attention to social cues. And most importantly have fun!