I work as Pharmac Assistant /informal Technician in Vancouver too. I wouldn't go all formal.. its just like any other job. I wear a nice pair of denim jeans and a nice semi-casual dress-shirt.
My duties as a pharmacy assistant/technician(not sure on the naming) include:
-Cashier, ringing in all the prescriptions and any items within the pharmacy
-Getting the prescriptions/re-fill orders
-stock, finances, paperwork
-ordering of supplies and Rx from the various suppliers, getting invoices, ect.
-Running to and from the bank making deposits as necessary
-Put supplies for other medical people on account, and purchase prescriptions on-demand from other pharmacy's
I basically do EVERYTHING in the pharmacy, but prepare the prescriptions. The pharmacy manager prepares the prescriptions and does the consults. I do the rest.
Hope that sorta explains what pharmacy assistants do in Canada. I'm at Pharmasave, a nice medium sized operation.