Since we had a post about the most friendliest countries, we should look at countries that have unexpected friendly people, not the usual answers like Ireland, Scotland, Canada, Taiwan, etc. For me it’s Montenegro. Londoners are considered to be cold and rude but I find them to be very pleasant with me.
Don’t worry! Say “Bonjour” when you go in a place and say “Merci” when appropriate, don’t be loud in general, and everything will be fine.