A very warm welcome to the new people joining this thread and good luck to your DCs starting at Ox and Cam.
My DS1 (C) - studying English - is going into his second year and DS2 (O) - studying History - also going into his second year. Both have a had a great time so far, somewhat limited by all the Covid restrictions and the second term done entirely from home - but nevertheless, have joined in lots of extracurricular things and have been happily busy with these plus academic work. DS2 is extremely busy at present helping to prepare for Freshers and Fresher's Events.
Regarding college gowns, DS2 (O) had plenty of use from his for Formal Halls, Matric and photos, choir practices a few times a week etc. He also needed a formal suit on many occasions.
DS1 (C) had no opportunity to wear his suit or gown at all (although a much nicer gown) as at his college, there was no formal Matriculation, no Formal Hall opportunities, no Matric photo and nothing 'traditional or formal' going on at his college. In fact, his experience was somewhat worlds apart from DS2. I think this shows there's a huge contrast between colleges rather than between Ox and Cam.
I'm hoping that second years won't be forgotten and can have some special events run just for them, especially for DS1 (C) who hasn't had the chance to meet most of his college cohort at all yet. Hopefully the college will finally think about opening the college bar and allowqing people to eat meals in the hall rather than taking all food away on plastic trays to their own rooms.
He also hasn't been told anything about his accommodation for his second year, although promised that it'll be in college. Usually his college promises all three years of college accommodation but they're asking some 3rd and 4th years to consider renting in town as they're still so overfull. He hopes to stay in college for all of his three years however.
DS2 knows his exact college room for next year and when we recently visited Oxford, he was allowed to go round the grounds with DS1 and I and point out his room windows. Once again, by contrast, I've still not yet been allowed to go round DS1's college grounds and only been briefly into his first year room on the first day he started. I don't even know what the rest of his college looks like! He's hoping to sneak DS2 and I round the grounds before the end of the vacation, if possible. Other colleges seem to allow visitors at least to the college grounds and my niece (who'll be applying to C for 2022) was recently allowed to look around her prospective college grounds.
Errol, DS1's best supervisor last year was a recently qualified postdoc. He actually marked essays on time, within about 48 hrs of receipt rather than not until the following term!