I don't understand what kind of difficulties we're talking about. Unless you have or have had some problems with the law, it would be quite problematic to rent a car. And even in this situation it is not always difficult. You can still try to use the services of car rentals under 21. It is not terrible. You won't get arrested if it's your first time renting a car. You should not be at liberty either, because it's quite common. I hope I helped you.
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