I noticed a cage around the ladder up to the slide when I went back to CTC to see an old oppo a few years back - that was the worst bit - full of nerves pulling yourself up and nothing to stop you falling back. Even with a harness I can't imagine it would be pleasant going down there on a piece of string if you let go of the strop
I hated the PRC mate - two of us got on the train and said "f*** that for a game of soldiers" and vowed we'd never be back (both passed). But I was intrigued so I went down for RT and saw the fella from the train (then an old sweat from week 4

). "Thought you weren't coming" says he "Yeah, not much on so I thought I'd give it a go, how about you?" "Same"

In the end only five passed out from that PRC of 44 (including me and him) which wasn't bad going because only 9 passed the PRC.
In RT it's definitely harder but remember you're not on a daily/hourly pass/fail routine. You'll have good and bad days (everyone does) but that said, too many bad days and you know the score. I can't say don't worry because I did but you'll laugh about it in the end and you'll learn to take it all in your stride and that's a priceless feeling mate