You forgot Little Chef, though I have no idea how to characterise them...

I've encountered 'to go' in Ireland before I've encountered it in Britain (then again, in 1985 Ireland seemed to have more Americanisms overall); and I still say 'to take away' - I'm eating a takeaway, not a go, dammit - but I've had the puzzlement earlier mid 1990s, but occasionally earlier.

I'm hearing both tsunami and tidal wave; haven't heard tuk tuk in the wild.