Usually ~6 stages around here. Dunno what's different but usually matches start around 9ish and end around 2ish (I'm generalizing but it's been a while since I was at an all day club match). There's usually time for an early dinner on the way home.
You pick your start/run time, a new shooter/runner starts every 8 minutes. When you make it through all 5 stages your done, and can leave anytime.
We do shooter briefings every hour, so you show up 10 minutes before your "run block" , so if you picked a 9am start show up early enough to get your gear on , and to the 8:50 brief, then take off. If your good you'll be done in about an hour. If you walk the whole thing and time out on every stage - well - you get your $$ worth
It's a pretty individual sport, you may/may not see anyone but the RO's, sometimes with the later start times you may have a short wait time when arriving at a stage, if there are slower shooters ahead of you. Occasionally may pass someone on the trail.
Wait time doesn't count against you, some guys like it, as it's a free rest time. I prefer to run early, but at our match I run last as a "sweeper" just to make sure everybody is out.