I did an Access to HE course in Humanities, so it was split between three different subjects. I found it incredibly enjoyable. It had been five years since I last went to college, but I had barely attended and didn't really gain any A-levels. On Access I was on a fairly tight schedule, as the assignments were back to back and I often had two or three assignments due on the same day or week.
It was essentially a fast track crash course, but it does prepare you for university work more than the standard A-Level, especially with the importance of referencing your work and researching by yourself. Universities don't look down on that. Stay organised and on track, and use the college library. The students who didn't take it seriously from the start and missed deadlines struggled the most, or just dropped out.
I was aiming for certain universities so I didn't apply for five. Ended the course with 39 Distinctions, 3 Merits, and 3 Passes out of the 45 credits required (15 of those were Distinctions given before we got predicted grades) and had conditional offers from Manchester, Sheffield, and Oxford Brookes. I was, however, rejected by Edinburgh for not already having a Modern Language qualification. It had nothing to do with being an Access course student, so I would also highly suggest double-checking with universities for other requirements specifically for your degree if you are unsure. Don't waste a choice as I did!
Before covid, most Russell Group universities originally asked for 30 credits at Distinction, and 15 credits at Merit, or just for 45 overall Distinctions (Oxbridge, maybe Leeds, etc.). My tutors had past students who went off to Oxbridge, so that is possible, just much harder to achieve.