I admit, I do not understand why anyone would participate in a poetry workshop and eschew thorough critique. When I see such a request, it translates to:

"Tell me I am pretty."

And I ignore it. All of our work should be important to us, if not n subject matter, then in competency of construction and only a thorough critique will add value and aid us in improving as poets.

I understand it may be frightening to open your work to criticism. But safe art is rarely of any lasting consequence.