Another question is... do the partiers in that area (or any area) all decide to leave at the same time (if flashing lights aren't deciding for them)? Is this normal behavior? It certainly isn't from my past experience. We all stayed till the wee hours and 12:30 was "just getting started". I'm not liking the vibe I get from this. It's not feeling very accidental to me but I could be wrong.
^^RSBM
IMO, the group exodus may have to do with both the estimated time the camp host is known to spot patrol the location, the rules/regulations of Prosser Family Campground (Tahoe Nat'l Forest), and/or the USDA Forest Service (federal regulations).
Researching the Prosser Family Campground site for both single-family camp reservations or a Large Group Facility, the check-in/out rules vary on whether or not the guests are there under "FF" (first come) or registered for specific dates or extended dates.
However, what seems clear is that the "Prosser Large Group" location is ready to accommodate up to 50 people and 10 vehicles -- nowhere near the 300 persons as estimated. (I'm not aware of a "venue" in the Park applicable or whether or not the teens held a one-day reservation).
On the other hand, family campsites are 6 people and 2 dogs maximum per site, and quiet hours 10 PM - 6 AM.
Pursuant to 16 USC 551 and 36 CFR 261.50 (a) and (b), and to provide for public safety,
the following acts are prohibited on National Forest System lands within the State of California.
Possession of an alcoholic beverage in the following situations:
a. In an open container in a motor vehicle or off-highway vehicle or
b. By any person under 21 years of age.
A violation of these prohibitions is punishable by a fine of not more than $5,000 for an individual or $10,000 for an organization, or imprisonment for not more than 6 months, or both. 16 USC 551 and 18 USC 3559, 3571, and 3581.
Explore Prosser Family in Tahoe National Forest, California with Recreation.gov. Prosser Family Campground is located on the picturesque Prosser Reservoir within the Tahoe National Forest, 10 minutes north of Truckee. Visitors enjoy the area
www.recreation.gov
ETA: Additional restrictions for CA teens.
Nevada County, CA cites curfew established for any minor under age 18...
Every person under the age of eighteen years who loiters in or about any public street or other public place or any place open to the public in the unincorporated territory of the county between the hours of 10:30 p.m., and the time of 6:00 a.m. of the following day, when not accompanied by his parent, guardian or other adult person having the legal care, custody or control of such person, or spouse of such person over twenty-one years of age, is guilty of a misdemeanor.
A violation of this section or any provision thereof is punishable by a fine not exceed five hundred dollars or by imprisonment not exceeding six months, or by both such fine and imprisonment.
All Nevada County Codes are available online, search for and read or print county codes.
library.qcode.us
CA Minors DL Restrictions:
Once you have your provisional DL, you may drive alone, as long as you do not have any collisions or traffic violations on your driving record. During the first 12 months after you are licensed, you cannot drive between 11 p.m. and 5 a.m. and cannot transport passengers under 20 years old, unless accompanied by a California-licensed parent or guardian, a California-licensed driver 25 years old or older, or a licensed or certified driving instructor.
When you become 18 years old, the “provisional” part of your DL ends. You may keep your provisional photo DL or pay a fee for a duplicate DL without the word “provisional.”
See the link for exceptions.
Minors’ Permit Requirements A minor is a person under 18 years old. Minors must have their applications (for a DL or any change of DL class) signed by their parent(s) or legal guardian(s). If both parents/guardians have joint custody, both must sign. Note: Minors may not work as a driver for pay...
www.dmv.ca.gov