Open Containers and RVs

I plan to register the D-Tub as an RV, as then open container laws don't apply, and insurance is hopefully cheap.

California
Storage of Opened Container in Passenger Compartment 23226. (a) It is unlawful for any driver to keep in the passenger compartment of a motor vehicle, when the vehicle is upon any highway or on lands, as described in subdivision (b) of Section 23220, any bottle, can, or other receptacle containing any alcoholic beverage that has been opened, or a seal broken, or the contents of which have been partially removed.

(b) It is unlawful for any passenger to keep in the passenger compartment of a motor vehicle, when the vehicle is upon any highway or on lands, as described in subdivision (b) of Section 23220, any bottle, can, or other receptacle containing any alcoholic beverage that has been opened or a seal broken, or the contents of which have been partially removed.

Nevada regulations:
Open container law does not apply to passengers, but they have to be a distance from the driver:

NRS 484.448 Drinking alcoholic beverage while driving motor vehicle unlawful; open container of alcoholic beverage 1. It is unlawful for a person to drink an alcoholic beverage while he is driving or in actual physical control of a motor vehicle upon a highway. 2. Except as otherwise provided in this subsection, it is unlawful for a person to have an open container of an alcoholic beverage within the passenger area of a motor vehicle while the motor vehicle is upon a highway. This subsection does not apply to a motor vehicle which is designed, maintained or used primarily for the transportation of persons for compensation, or to the living quarters of a house coach or house trailer.

BLM regulations:

http://www.epa.gov/fedrgstr/EPA-IMPACT/2004/May/Day-03/i9961.htm

3. Open Container of Alcoholic Beverage

    a. You must not carry or store a bottle, can or other receptacle
containing an alcoholic beverage that is open, or has been opened, or
whose seal is broken or the contents of which have been partially
removed, within a motor vehicle on public lands.
    b. Each person within a motor vehicle is responsible for complying
with the provision in this section that pertains to carrying an open
container. The operator of a motor vehicle is the person responsible
for complying with the provisions of this section that pertain to the
storage of an open container.
    c. This section does not apply to:
    i. An open container stored in the trunk of a motor vehicle or, if
a motor vehicle is not equipped with a trunk, to an open container
stored in some other portion of the motor vehicle designed for the
storage of luggage and not normally occupied by or readily accessible
to the operator or passengers; or
    ii. An open container stored in the living quarters of a motor home
or camper; or
    iii. Unless otherwise prohibited, an open container carried or
stored in a motor vehicle that is parked and the vehicle's occupant(s)
are camping.
    iv. For the purpose of paragraph (c)(i) of this section, a utility
compartment or glove compartment is deemed to be readily accessible to
the operator and passengers of a motor vehicle.

Further backup:
http://blogs.kitsapsun.com/kitsap/roadwarrior/archive/2006/04/rv_passengers_exempt_under_con.html
The in basket: My stepdaughter Ronda Armstrong passed along a question from her friend Riley Brazil, who wonders if the open container law regarding alcoholic beverages applies to people in the back of a motor home on the road.
The out basket: I'd never been asked that before, but it's a question troopers get a lot when they give safety talks, says Brian George, one of those troopers.
"Passengers who are in the living quarters of a motor home or camper are exempt under the open container law," he said. "Passengers who are away from the driver may drink. "
That would not extend to a passenger in the seat next to the driver, he said, and the demarcation line between where it would be permissible and where it would be illegal to have an open container in a motor home would be a judgment call for the law enforcement officer who makes the stop.
"The state patrol does not keep a stat on open containers as it relates to DUI arrests," he added, "but in my time stopping vehicles I don’t recall too many times when a driver who had an open container was not impaired.
"Troopers have stories of asking a driver to step from the vehicle for field sobriety tests when an open container falls onto the ground (first off the pants then onto the shoes).
"On another note, I ran the stats for 2005. Sixty-two people were cited in Kitsap County for open container, and 27 in Mason County."
"This law would be enforced like the seat belt law, the passenger would be cited," Brian said.