@Englitter it says private messaging isn’t working at the moment so I can’t DM you. So I’m not going to say as much as I would have said in a private message but suffice to say I know a LOT about RP and Oxford in general. I’ve seen replies to you on the other thread as well and what everyone is saying to you here and there is correct.
Furst of all, a decent proportion of students at Oxford end up at a college they didn’t apply for – this is becoming more of a thing every year with far more pooling at departmental level.
You may have heard your college makes all the difference, but I agree with the person who said your college doesn’t impact your experience as much as you think, unless you choose it to be so. You can be one of these people who sits in the college bar and never leaves for the whole three years or you can go out and socialise with anyone from any other college and have friends all over the place, which is what I did (didn’t like my college which was old, prestigious but also very rugger bugger public school) and so do many many others.
Also been said here, if your subject cohort is very small you are far more likely to go for tutorials at other colleges and indeed share tutorials with students from other colleges and end up being taught right across the university.
Think of your college as your halls of residence – if you got a hall you didn’t want at Durham – which I hear about happening all the time – you’d probably have the same initial reaction and then crack on.
Saying if they don’t want to be at RP then O probably isn’t for them is because - as I already said - everything that Oxford has to offer is available to them if they want to go out and get it. Lots of other colleges are small, lots of other colleges are modern, lots of other colleges which are older and more the type your dc was expecting actually have modern, ugly accommodation off site, which you’re not aware of when you apply but where you end up living in the first and second year (my experience!)
At the end of it all you will have an Oxford degree, which is exactly the same as any O degree and – much as it pains me to say, because I have a DC at one of the other universities you’re mentioning – that will hold far more sway in the jobs market.