I know! Isn't it crazy how they come up here expecting to indulge in winter sports during our coldest months. We won't venture outside then, when exposed skin flash-freezes in 2 seconds flat. By the middle of May I like to make sure we have enough musk-ox chips laid by and my two extra-heavy polar bear hide storm doors on my igloo. We look over the sled dogs and bring the best male and bitch in with us and shoot the rest for eating through the freezin' times.
Seriously, I wouldn't worry too much. I've heard the stories about rudeness, refusal of service and vehicle vandalization too. And I know someone personally who has experienced it, but it's definitely not the norm. There are always a few arseholes around, but they have fairly short attention spans and things will blow over for them soon.
Actually, I was playing a St. Paddy's Night gig well into Michigan on March 17th, the day the war started, and I heard no condemnation of Canada's stand from anyone down there, not even from any of the drunks in the bar. We had a great time playing for them, the party went on till the wee hours. I've always found Americans to be great friends and the audiences are definitely much better on average than northern Ontarians. Incidentally, we had no problems crossing the border at Soo Michigan, going into the States, but the Canadian Customs boys stopped us and search us thoroughly the next day when we returned. Go figger. At least they didn't want to look in our bums. They can do that, you know, any old time they like...
And as Daylia said above, Canada is actually providing a strong supportive role in the war effort over there... 4th, in fact, right after the Australians, (moreso than a lot of countries spouting lip service in support of the war) despite our government's stand against entering the conflict directly. We all hope this thing is wrapped up quickly so we join in and deploy our weapons of mass reconstruction.