While I am not a real fan of quick classes ....
I recently was on a Royal Caribbean that offered this class and I got up bright and early out of curiousity and watched the pool session.
Hopefully this was not the exception - the students were motivated, attentive and knowledgeable and the instructor was very competant, patient and thorough. The pool skills were drilled until perfect and I was impressed.
Later in the day I talked with the students and they were hard at work restudying the materials. Basically they took the cruise for the course and were devoting their entire week to it. I've seen far worse in traditional classroom settings.