tim wrote in post #15905810
I've read about American photographers trying to work in Canada with similar justifications on professional forums, the answer was it's pretty much impossible since someone in Canada can do the job. I suspect the same will be true the other way around.
You may have to outsource the ceremony photography to another photographer, or jump through a LOT of hoops.
This is not true. I am an American citizen who visits Canada for photography work at least once or twice a year. I am 100% honest when interviewed by customs officials. Since I'm working for and paid by American companies Canada does not require me to pay Canadian income tax, and has no objection to my brief work-related visits. I suspect that a Canadian, working for Canadians and paid by Canadians, who does several hours of work for those Canadians while on American soil, will not have any difficulties. But, I can't give you a definitive answer to your legal question so if you want a definitive answer consult a lawyer.