As a student I worked at a lab, and had a PDP-11/10 all to myself. But of course I desired more. I heard such wonderful things about the 11/34. Six years later I worked for a small company that was able to purchase a PDP-11/70 running RSTS/E. I had died and gone to heaven!!
My high school had a /34 running RSTS/E, with roughly a dozen terminals on-campus, mostly in the lab. Even in 1980, I recall my teacher warning about Y2K, though not yet named as such. Fast forward 20+ years, and I would set up SIMH, install RSTS/E on it, and discover that version 7.0, which was what I used at the time, was not Y2K-compatible.