Where I fly...
RTO is always used.
(I agree with this, as I cant think of a situation where you wouldn't want maximum possible braking as soon as possible?)
On landing we must use autobrakes unless they are U/S.
Normal setting would be 1-3 depending on desired taxiway exit, or runway lenght (we're having to use 4 on the Narita B runway).
(I feel that the captain SHOULD be allowed to perform manual braking if he desires.)
Full reverse thrust is the standard procedure, however this does not preclude the captain from electing to use idle reverse (this is only done if rolling through to the end of the runway).
This info for 767/2/3.
(762 with steel brakes, and 763 with Bugatti Carbon Brakes).