Two fine points of FAR interpretation

A friend of mine is curious:

1. If a runway is closed by NOTAM at a non-towered airport, does that
mean that the adjacent *taxiway* can't be used to legally take-off and
land? (I know the insurance company would have an opinion about this,
also, but let's ignore that aspect for the moment.)

2. We all know about the minimum fuel requirement for take-off. If
one were to land with less fuel in the tanks than the required reserve
(and without a good reason for using part of the reserve), can the FAA
violate you for negligence?

Please post in the groups (the email address I'm using here is
primarily a spam-trap) and, no, I'm not in trouble. :-)

-Dave Russell
8KCAB