The Alfa Romeo Club of Canada is an association of regional member clubs. It is usually these regional clubs which host a variety of events of interest to their local members. You are advised to consult the pages on this site for your local club.
From time to time the national club hosts events of national importance. The most recent of these was ALFA expo17 in July 2017. This event served as the North American convention that year and was enjoyed by members of many clubs in both Canada and the USA.
In the meantime, find a local club and join in any or all of their activities. Alfas are meant to be used.