No to a lot of changing, that's why I want to limit myself to one (or
a maximum of 2) lenses.

Depending on what you have, but for Italy I would like to have
an extreme wide angle. (10-20 or 12-22) (For a 1.5/1.6 crop DSLR).
And I would like to have 1 or 2 lenses covering from 18 to 200.
(or a 18-70 and a 70-300).
The extreme wide angle does not come combined with a general
zoom, so you have to cary at least two lenses, and the extreme
wide angle is large and heavy.

Don't like the backpack solution on shoots or holidays, although
have used a camerabag (only camera and lens) and another lens
in it's tube in a backpack. But a handy camerabag on your side
which holds camera and both lenses, where either lens can be
mounted is is nice solution.

Yes I have spend a significant part of my once in a lifetime trips
taking pictures. But look at the land, buildings, people for foto
oppertunities, do not look at your display for the oppertunities
allready in your camera. (Don't spent time admiring your pictures,
doe spent time admiring real life).
I always did this, but that was easy with a film camera.

ben