求翻译：酒店退房时间为中午12:00以前，若超过12:00退房，每小时按房价的10％收取超时费，18:00后按全价收取房费。是什么意思？

Before hotel check out time is 12:00, check out more than 12:00 per hour, according to the rates of overtime fees 10%, charged after 18:00, the full price of the room rate.