Hah! There is feedback and then there is feedback
.
I've actually gotten them (informally and unsolicited) over the years. Some with good suggestions that were easy to incorporate which, I think, made my program better. And then there are the unreasonable, outrageous ones that make me roll my eyes.
I did a survey around covid before I reopened. The responses, even the unreasonable ones, were insightful. It made think of doing a formal one occasionally.
A survey twice/year or at exit sounds good. Can you share your survey with me?