I don't think we have a social breakdown of camping, so I'll give it a shot for those asking about quiet/privacy and maybe others can add:
In district 9^H^H^Hgeneral camping, the late, late night party scene is strictly dependent on the weather. It can get VERY COLD or VERY WET at night at the Gorge -- either of which or the combination will kill the party after the show. However, if it's nice out, the partying will go until the sun. Bring earplugs and you won't have to gamble. 2016 the scene was weak-sauce, according to scouts from Premier, bud.
They have clamped down on the mega concert sound systems later at night compared to before, but it can still get quite loud and they don't tend to police this side as often.
Premier tends to be a bit more chill, as some folks actually believe that paying a bit more will get them nicer neighbors a bit further away, but that's certainly not guaranteed by anyone. I find that in this tier it really helps to reach out to neighbors to set expectations (determine friends and enemies so you can figure if you need to move before it gets dark). There are several crews that build camper and tent villages when they arrive, and it might behoove you to get to know those neighbors before you leave to meet them
Weather doesn't affect this tier quite as much because of the crew situation. The camp infrastructure is usually more advanced and supports bad-weather activity, so you'll generally find more activity but localized to specific camps/villages.
Tearass tends to be anything but. Security will talk to really loud folks more often, but it's usually not an issue in the RV parking area, though I'm not sure how the tent folk fair. It's over the hill a bit from Premier with D9 on the other side, so it's typically much quieter than "standard". There's always at least one jackass, so figure out where they parked... Regardless of weather, it'll likely be quiet (except for jackass).
Gold - you tend to get much more area to yourselves and typically keeps it calm and isolated (until you walk into a venue with 20K people). Great place to be
from when post-partying...
Oasis - it's a shared front yard scenario with plenty of space and VIP/lounge tents to hang in if you need more space. There's access to basically every other camp level, but it's a hike or bike ride to get there (the OG campground is on the other side of the venue). If you can afford to sleep here, you can afford to Uber from Premier, bud. Good weather - folks milling about and lounging; bad weather - everyone's in their own tents.
Cave B - don't really know the privacy situation, but we'll start rumors (Dave filmed his House appearance in the underground studio there?)