I'll second Gertrude's post. In my IMCR course, as well as NDB and ILS, I did one each SRA and PAR, (being based near a friendly RAF station helps get the PAR) and they were fine. It's a bit like in your early stage training when the instructor talks you around the circuit and down the approach, except that the person talking is looking at radar screen(s) instead of sitting next to you.