It is expected and a pleasure that our next King will be present for the Country's 150th celebrations. As David Le Roy posted there is a role for the monarchy - and it is mandated by the Canada's constitution. Pierre Trudeau and the Provincial Premiers could have chosen to change that when they patriated our constitution, Constitution Act 1867 - formerly known as the BNA and the creation of the Constitution Act 1982. 

And speaking of the monarchy the only way it could now be changed is by the amending formula - it happens to be the toughest one - section 41. A super majority meaning EVERY MP, EVERY Senator and EVERY MLA (MPP in Ont). Like PEI is going to do that! It is called the super majority, so when I see the comments on this article from the know-it-alls - know-nothings it gives me a big belly laugh at their expense. AHA-HA-HA-HA-HA-HA!