I did a 1,857mile (2,989km) road trip including some of the more remote parts of Scotland in an electric car last year. Interestingly most of the ChargePlace Scotland chargers were in public car parks, which have public toilets. The Highland Council even has a map of public toilets. All very civilised.

When it comes to Tesla superchargers in the UK, most are in service stations, which tend to be open all the time, and indeed were some of the few facilities to remain open in the strictest periods of lockdown given that good transportation was classed as essential service. There are a few superchargers by hotels and restaurants, but in my experience they're always fine with you using their facilities (the main issue seems to be a few who charge excessive parking fines if you don't register with them while charging).