Grace Period
The grace period is the buffer between your official return time and the moment a late return fee starts. It exists because real life is messy — traffic, a slow queue at the fuel station, a long walk back from parking.
It is commonly somewhere between 30 minutes and an hour, but it is a courtesy rather than a guarantee, and the exact length varies by company. Some are generous; some count the clock strictly.
Treat it as a small safety margin, not as free extra time you can plan around. Once it expires you are usually charged for a whole additional day, so leaning on it deliberately is a false economy.
If you can already tell you will be more than a little late, call ahead and extend rather than relying on goodwill at the desk. A planned extension is cheaper and avoids any dispute.
