MC job info & crossrating

So I got the job of MC for my rate and I’m very excited about it especially because prior to me knowing about it I didn’t know the military had a job like that. I would just like to know anyone’s personal experience doing the job and how their quality of life is as there isn’t much I could find online. I also wonder how cross rating and getting extra certifications go. I’m trying to make the most of my time inside and/or sign another contract if I enjoy it that much.