not to be a downer, but you are fooling yourself if you think you can just buy an id at on of the shops at yonge and dundas, then use it in the downtown area, i live about 5 minutes from there, I was a bartender in the area for quite some time, you really get to know the local fakes. They will work for you, with confidence at SOME beer stores and lcbo's, some bar's even. Not a chance at any real club that checks ID's.
just my 2 cents, I once had a fake from downtown and it served me well, but expect it to not work all the time, and if they reject it, grab it back quick and just leave.
Good luck,