I had the opposite experience from them breathing down my neck. Instead, the RO assigned to my friend and I showed us how to load our mags, how to aim and load, and then stood back about 4 feet. Not a good thing when its your first time shooting and you end up having a problem. The Glock my friend was shooting ended up having a stovepipe and it took the RO almost a minute to realize that my friend had stopped shooting and that something was wrong. Once we finished our rounds, we left with holes in paper, most of them not on the target itself.
My first time at Phoenix was a much more positive experience. Our RO was very friendly. He showed us how to load and then, after the first mag, loaded the rest for us. He figured we were there to put holes in paper, not to get frustrated at loading that 10th round in the mag. When I took my first five shots, he got my attention, and gave me some tips on my grip and stance. Immediate improvement in my groupings. The entire time, he was helpful with a sense of humour. During that shoot, I ended up with a stovepipe in the Glock I was shooting. The RO immediately reached over, took the Glock, explained what happened and how to clear it. Not only did I put lead down range, I learned several things at the same time.
Every time I've gone to Phoenix since, the experience has been the exact same. Every time, I have learned a little bit more.