As already mentioned, your safest bet is to get the 12-month CAA licence in advance. (The local TC office I used ran it through their regional office which took 3 days of inter-office waffle.)
N.B. YOU CANNOT VISIT CANADA WITHOUT GETTING SOME FLOATPLANE FLYING IN!!!!
Beware though, I did the CAA floatplane endorsement back in 2003. Upon taking off from water for the first time I had the closest thing I will ever have to a religious experience, "If God put me here for anything, it is to do this!"
Absolutely changed my life. Sold up in Europe and moved here the following year, fly floats every week and skis in Winter and never looked back.
You have been warned!