Really enjoyed the Numismatic Workshop you mentioned. Stephen Bell gave a very informative workshop on:
Printing/Anatomy of a banknote; History of CDN banknotes; Grading notes & Collecting paper money in today's market. Although the last part of the workshop was brief (we were running out of time) it was a very informative & fascinating morning.
In the afternoon, Susan Maltby discussed preservation, storage & care of both coins and banknotes. It too was very interesting & informative. I would recommend these workshops to any collector interested in understanding grading methods (a lot of useful technical knowledge on the production of banknotes) & keeping/storing their collections. If the RCNA sponsor a similar workshop next year I would highly recommend you take advantage of attending.