I'm still interested in what happens in other countries. It seems that the norm in many places is to book out over the radio,
At 99% of airports in North America, there is no such thing as booking out. The nearest equivalent at fewer than 1% of airports would be the requirement to telephone for a transponder code before walking out to your plane. I am aware of this requirement at a few of the biggest, busiest airports in Canada. Otherwise, as long as you conform to radio procedures, and traffic flow, you come and go as you wish with no other fuss. Flights beyond 25 miles require a flight plan or the alternative, notification to a responsible person. Happily, my wife is a very responsible person!