Its just another way for us to be anal about flying in the UK (like considering the danger of eating a chocolate bar in the cockpit
).
If an airfield doesn't really give two hoots about your details, then why list as PPR, just give the opening times. It'd make life much easier, and would mean we could "lets land there, I need a piss and a drink", without having to book 3 weeks in advance. This would also mean that we could avoid the danger aspect of drinking and eating in the cockpit
(PS I'm a grumpy old bstard today, I'm jet lagged and woke at 4am, and my flying holiday in the USA is over for this year....where I never got PPR once)