Snap, DS1 assures me that he's still having a good time but I think the combination of not really having much in common with his household, the fact that most of them are in their rooms a lot of the time anyway, two weeks in isolation near the start of term, followed by the rest of the entire first year in isolation still, once he got out, hasn't made it easy for him to 'find his tribe'.
Also, his college seems quite unusual in so many aspects and there's no sense that they've tried to enable students to meet and get to know one another - quite the opposite really. They're very 'restrictive'. I think he might try the college library once - as he's not even been in there so far - but isn't inclined to sit wearing a face mask for any length of time out of choice and he'd just feel self-conscious in a visor.
He participated in everything that anyone else was doing, socially, in his household and feels he did that more than anyone else, even though he hasn't got much in common with them but anything collective now seems to have stopped. The 'party girl' is on the same corridor but not in the same household. She and friends just chose at times to use the corridor area of his household to 'party' into the night!
The compare and contrast thing is quite humorous in a way when we're in touch via email: DS2 - who missed 'Matriculation' as he was in isolation, has got a special event coming up for his household where they can still have photos, in full subfusc and the college wants to make it a proper celebration for them, as far as lockdown will allow.
By contrast, DS1's 'Matriculation' at the start of term, was in a large, cold echoing tent, with a couple of 'households' in tracksuits and hoodies (except DS1 who wore his suit at least in part) a small plastic cup of weak champagne and a mumbled message from the Principal that most people ignored, after which everyone drifted off to their own rooms!
DS2 has fantastic meals in hall, sitting and chatting with very sociable like-minded people whilst DS1 walks to the local supermarket and buys a packet of sandwiches, if no meals are served in hall or eats the usual 'junk food' available most days in college hall on his own. DS2 had plenty of healthy meals provided to him whilst in isolation and his laundry done. DS1 was only given 2 meals per day and one of even two of those 'meals' was a single packet of dried up sandwiches and a bag of crisps! He had 3 weeks without clean clothes to wear!
I've told DS1 that at least, in his dotage, he can recount tales of 'my days at Cambridge' to his grandchildren and say, 'yes, this too was Oxbridge'. He's got a great sense of humour and is able to laugh about the endless on-going contrast between his life at C and his brother's life at O. Of course they're both different universities but they seem 'culturally' world and worlds apart.