US and Guatemala?

You can technically get from the US to Canada via the Atlantic, so the logic checks out.

Legend

I recently visited Killarney and I thought it was a great system. As a tourist, the €2 was no big deal to have a cup for the whole week. Then I just returned it before I left and got the money back. They do this all over Germany and have branded cups for each town. It would be cool to see it more widely done elsewhere too.

I’ll second this one. I love Proton. It’s the only free service, other than the late Apollo, that I’ve ever decided to pay to upgrade just because I love it so much. It also happens to be well worth paying for imo.

As with any service, unless you build and host it all yourself, you’re ultimately trusting some one else with your data. However, Proton are generally very transparent and, as you say, seem to really know their shit. For those reasons I choose to trust their services.