My mom and my best friends mom used to do this at our local six flags in the summer. Drop us off and come back like 8 hours later. I was 12 when they started doing this.We lived about an hour away from Carowinds amusement park near Charlotte. My dad worked in Charlotte. Several times a summer he would drop us off on his way to work and tell us to be at the car pick up at 5:30 to go home. We would be there all day with no cell phones or way to contact anyone. Today I can't imagine going to the mailbox without one.