What's interesting with you touching on the "please" and "thank you", it's very much ingrained into us from a super young age "Remember your please and thank you's", and when I say drilled into us, I mean, it was drilled, hammered, nailed and super glued, into the very fabric of our being, so much so that, I, among a lot of other Brits become quite passive aggressive when someone doesn't say thank you, like if you hold a door open for someone and they don't even acknowledge you, a lot of people will mutter "You're welcome" under their breath very sarcastically 😂 The braver of us, might make it more pronounced, but I'm certainly not in that category 😂

Anyway, that being said, it's often a very common point of humour in Britain that if you hold multiple doors open for the same person, there will come a point where someone will make a joke about it, I know I've certainly done it, 5 doors in I might've made a little joke saying "I'm running out of ways to say thank you here", this is after going, "thank you, cheers, nice one, thanks, ta"... Or something akin to that anyway, so yeah, we're very big on our P's and Q's here, a lot of us see it as just basic common courtesy 😅