I did one , it was 5 saturdays, half of the "instructors" did not even know the test was now multiple choice, At most I pulled 3 questions from those classes.
We spent an entire day designing t-beams, slabs, concrete beams, etc... (For the Structural Day) Looking back I would have been better off spending the day reviewing Statics on some other basic structural stuff (moment diagrams, etc)
It would be nice if someone tailered a review class to the PM discipline you are taking, I mean I did transportation and wasted an entire afternoon listening to a guy design an entire waste water treatment facility....