Kokua Line: Is wait limit a rule or a courtesy at public tennis courts?

Question: A mantra of the pandemic has been that “outdoors is better than indoors” for get-togethers. Also, exercise is a great way to boost physical and mental health, which is so important. To that end, some work friends and I, who no longer see each other daily because we work from home now, have been meeting up to play tennis. We play on public courts, and we switch up the location so the driving burden is shared. I notice that the “rules” for court use seem to vary b