I was an advisor for 5 years though I left in 2017 so my knowledge is probably a bit old now.
There's a fair amount of training to get through before you're fully qualified so a certain level of commitment is required in return. Most people have set working days and you'll generally have a diary of booked appointments so have to honour those otherwise you're letting clients down.
It's basically like a job, you'll get supervision, appraisals, cpd, feedback on quality of advice etc
Good bits: Sense of achievement, I enjoyed working with the clients and hearing their stories. I was a SAHM at the time and it kept my professional skills up to date and gave me something to put on my CV/references etc .
Bad bits: There's a limit to what you can do for clients, sometimes it felt like it would be more valuable to operate more like a support worker. I did get bored after 5 years but I didn't really want to progress further at the CAB, eg into a paid role, as my career direction was elsewhere.
Another one of the reasons I left was, at the time, there was a big push to telephone advice which meant working in a call centre type of arrangement. I hated that and wasn't prepared to give up my free time and work for free in a call centre (with monitored breaks, call times etc
)
Bear in mind that the CAB runs almost like a franchise. Each branch is a separate entity and will have difference conventions and ways of working so your local branch could be very different.