> I've learned that the right answer to why I'm coming is "for a conference." If they inquire further, I'll say that I'm speaking there, but if they don't ask, I don't tell. <g>

Yeah, you're definitely better off not volunteering information. We were driving and going through Windsor, which is normally not a problem at all.

> This is the kind of stuff I thought companies planning conferences might not want to deal with in holding a conference with a primarily US audience in Canada.

I think that's really the crux of the issue. Additional issues brought on by the possibility of problems with the language laws just can make it even more complicated for a US company and attendees, vendors and speakers coming from the US.