Thank you for all your help and assistance so far. We have gained some very
useful information and destinations. We are both over 21, so no problems
with checking out the casinos in Vegas. Sounds like hiring a car is the
best option - just got to remember to drive on the "wrong" side of the road
:-)

At some locations, you also have to be at least 25 years old. I have no
idea how common this is in California (when I was that young it wasn't an
issue), but if you're under 25, you'll need to inform the rental company
when making a reservation. If you're allowed to rent at your chosen
location, don't be surprised if they charge you extra.

Also note, when comparing car rental prices, that the base rate that the
rental companies will quote you doesn't include everything. Not only is
there tax on top, but there's a daily "loss damage waiver" charge which
amounts to insurance against theft or damage to the car (they say it's
not insurance, but that's a technicality). LDW is charged separately
because it's optional, but you should only decline it if you have some
other insurance that will cover this -- if you don't pay LDW and the car
is stolen or destroyed, you're liable for the full price of it! (The term
"CDW" is also used sometimes, meaning "collision damage waiver".) There
are other insurance-type options as well, which are also daily charges.

You may be able to get a rate that includes LDW and perhaps other
insurance, and would be better than you can get from within the US,
if you book the rental before leaving home. I don't know. You'll
still need to mention your age if under 25.

As to only having to remember to drive on the right, you might have
a look at http://www.dmv.ca.gov/pubs/hdbk/driver_handbook_toc.htm.
(That's for California, but things are pretty similar as you go from
one US state to another. In particular, the law about red traffic
lights when turning right is the same in all states.)
--
Mark Brader | "I always pass on good advice. It's the only thing
Toronto | to do with it. It is never any use to oneself."
| -- Lord Goring (Oscar Wilde: An Ideal Husband)

My text in this article is in the public domain.