If I am driving 3 hours to get to an event then I want it to be worth my time and fuel. I do not mind an early start if the day is going to be fun (and yes this is subjective). I had a very bad experience last year of a film sim event that failed to meet my basic expectations, and was the worst day of airsoft I have ever experienced. Far too much time just waiting around for the next scenario (which were generally poor) with a second team of six that just faffed around and took ages to do anything, and very little time actually shooting. Then they wanted to go home early. Overall very disappointing and means I will not return there again.
Time shooting and in actual contact with "enemy" is important to me. I do not want hours of briefings, tabbing miles to reach an objective to then wait around with nothing happening, and a long walk back to respawn. Been there, seen it, and bought the T-shirt for real. Airsoft it is about fun and plenty of action. Being an older player I do not want or need long infil or extraction to objectives.
Less players should be better, more room for manoeuvre and not getting bottlenecked. 10 hours of play time is good but only if it involves actual shooting, not guarding bases, handling POWs, OP work, walking to next objective, or just sitting around with thumb up arse waiting for something to happen.