Hell, getting things to understand barrios when I lived in PR.... Yes, this address looks like it has two cities on the address. Nope, that's how it's supposed to be.

Or the hassle of trying to figure out whether a website was gonna list PR under State or Country or just not have it at all. I got really good at modifying web forms with Chrome devtools to inject Puerto Rico into the State drop-downs so I could just get shit shipped.

And for a while I didn't have any way to receive mail at the house I was renting, so I had stuff shipped to work, but they only had a rural box addr, so the addr was "Box 1234....". Anything shipping via UPS/FedEx didn't wanna touch it, so we had an alternate address for each of them (since UPS's system couldn't find one address form and FedEx couldn't find the other) and I'd have to find out who the seller was shipping with.