Loving my 2nd gen Dots. I bought them in the UK on a recent trip and have installed 3 of them in my house here in New Zealand.
It did take a while to get everything sorted - mainly because, during the setup, it was only letting me setup using my American Amazon account and not my UK Amazon account (where I have my Prime Music account). It took a good couple of days to work things out, thanks to this forum and others like it, before managed to get everything Uk'ed. Thank goodness for VPN's. Fortunately, the timezone setup is not an issue with the 2nd gens, although it would be great if I could get my address changed to my NZ address, but all-in-all, that's a minor issue.
I must admit, it has been a bit annoying at times to get Alexa to play the music I want. A couple of examples, one of my favourite bands is James, and have so far not been able to shuffle their songs (always get James Arthur for some reason). And getting Alexa to play anything with a non-English name or title is exasperating. But that's half the fun I suppose.