Be glad you are near Sarnia.
Now, THAT is not often heard from somebody in Florida.
Here is the reason. I have crossed the Blue Water Bridge many times, sometimes with very miscellaneous bikes on my trailer. Both ways, I have received a cordial reception from the Customs personnel.
"Are those both your bikes?"
"Welcome to Canada!"
Almost that simple.
Even my dog doesn't like the people who man the Ambassador Bridge. They confiscated some of his kibble. Yeah, there's mad cow disease in Canada, so American made dog kibble is not allowed back into the U.S.A., just in case we refilled the bag with contaminated Canadian kibble.
And then they gave us back the documents of some innocent folks from Ohio. No, that's not us. They don't look like us, do they?
Best wishes, y'all.