It’s a fairly informal affair there, with a real mix of non-CPSA shooters having some fun, but also a good few top shooters usually (plus plenty in between). Just turn up, buy an entry card for Targets Only, get a tea and bacon sandwich if you fancy it.
You can shoot the stands in any order, so you can avoid any queues but I advise you to not shoot an empty stand. Just hand your card to the scorer on each stand. Always watch at least 1 shooter, studying the targets more than the shooter. Decide how you are going to tackle the targets. Enjoy, keep it chilled.