Thanks for that clarity; I just got back from my daily 4 mile hike and while on it I recalled that the film opens saying the city was Phoenix. Therefore the hotel room was in Phoenix and Sam traveled there for their flings.
To me it looked like once Janet stole the money she traveled father than just 15 miles or so from Phoenix, but I guess that was just my impression.
While female viewers of the film might wonder how someone could forget Sam, Norman's interest appeared to be more focused on women like Janet. E.g. I tend to not notice good looking men and if I do, I quickly forget them. So yea, very minor goof (if one at all).
No, no. Fairvale was 15 miles from the Bates Motel, not Phoenix!