I often have Prime USA and Canada at the same time. I pay a yearly subscription in Canada and just buy the USA prime monthly when I need to a lot of packages delivered. Often they will even give a free promo week. I can watch prime video on either.
I also have affiliate accounts in each country so it can get confusing. The easiest way for me to keep track of them is to use different email addresses and view them in different browsers. For example, I mainly use Chrome, but I have Firefox on the computer and use that for my Canadian Amazon stuff.

Thanks Ray. That makes sense. Now with the smart TV we recently got and Starlink RV on our horizon (before we head to Yukon and Alaska this summer), I’m having new learning curves.