Originally Posted by
AlexSTC
Could be part to help the hotels in the area but I think its more for tracking purpose if he had to leave the airport. If he would be able to stay in the airport I don't think they would have a problem with it. Like emma69 said it could be that the airport closes at night, immigration might require a destination when entering the country for control and tracking.
Doesn't the US require the same - you have to list a hotel, residence, business or cruise ship when you fly down there.