That's interesting. I would have thought that any work, incidental or not, would be a violation of the visa. I've heard of people being harassed for e.g. doing

That's interesting. I would have thought that any work, incidental or not, would be a violation of the visa. I've heard of people being harassed for e.g. doing work on their vacation property (e.g. Canadians owning US property) while they were vacationing even when it's something small/minor.