Advice for Teaching CC Students?

My program has just taken in a cohort of community college students. We teach a profession with a fairly business-oriented culture and strict norms of timeliness, client trust, etc (think accounting but not accounting). I just taught a group in a practicum and it was...not good. Students were outraged over weird, or at least weird to me, things. For instance, in our practicum, we work with a nonprofit client assigned to us. One student was enraged by this, angry that "a third party" was allowed in the classroom. They don't seem to have any understanding of Office 365, email, or professional standards. I have up until now only taught graduate students with several years of work experience in practicum, so feel free to laugh at my naivete. I have taught undergrads before, but they were standard classes. Students were rude to clients, and one wrote in their evals that I am probably a student who infiltrated the class to steal their homework. They have no idea of how Google or libraries work.

This cohort is here to stay. I am writing detailed directions explaining things that were taken as a given in practicum before, like meetings start at the stated time and you must show up then (they were coming in 2 hours later and surprised that no one was there, and again, angry and aggressive with me for "not waiting."

If you teach CC students, what are some things I should clarify and explain to make this coming term less of a dumpster fire?