It must depend on the university, or possibly the time. In my time at UCSD and UCLA (late 1970s/early 80s) instructors who held the Ph.D. were addressed as Dr X. by default. Also referred to, by default, even when we knew them well, for social as well as academic situations. For example it was Dr W of the German Literature department who came to conduct wine tastings at our German Club, and there were occasional social gatherings at Dr C.'s house or Dr. L’s house. That was how we referred to them. On the other hand, in the class schedules, they were always listed as just plain Mr. or Ms.
PopeJewish, if you don’t mind my asking, when did you go to college? I ask because I’m surprised you say “mrs.” and not “ms.” Are “mrs.” and “miss” on the rebound?
As far as etiquette with the R.F. is concerned you dont have to use any terms of address that you dont want to simply because you NEVER HAVE to meet them.
There are a lot of people who would desperately like to meet Liz and there are a number of people who really,really DONT want to meet her,republicans,extreme left wingers etc.
Even when it comes to shopping trips etc.anyone who doesn’t wish to serve the Queen doesn’t have to,and there are always a hell of a lot of volunteers to take their place.
Quite a few people come out with the "Well if I meet Liz then I’m going to treat her like anyone else"bravado,but the fact is she more then likely doesn’t even know you exist let alone agonise over meeting you or not,or care.
When the next guy gets sworn in, you may certainly opt for “Mr. President.” Or even “Your Excellency,” if you feel like it.
Though, now that I think about it, I guess you could justifiably call the current guy “Your Excellency” too. After all, the honorific doesn’t specify what he’s excellent at.
And how is that anything like a royal address? We also say “Mr. Chairman”, “Mr. Speaker”, and “Mr, Jones” (but the last one only if we are Bee Gees [10 Internets to whoever gets the reference]).