Originally Posted by
Han Solo
The problem with "the next crew will be here in 5 minutes" that in my personal experience that is a lie 100% of the time. Sign up for 5 and you're stuck for 15 (and then after 15 you end up leaving without the other crew anyway). Don't blame the other crew, it's the transportation providers who don't provide adequate vehicles and then are unable to give a proper estimate that are the problem.
It's different when they were four miles behind you final, and you know it. Flip side, I have left without a crew the driver wanted to wait for when there was no other plane (or LDG lights) in sight at a small field. It's at least 15 minutes from long final to curb.