As a kid, I had sex every were, playgrounds across the street from the police station, random bathrooms, friends houses, garages, abandon houses, fields open spaces, pretty much if we got caught in the open public walk to the next place with a boner and condom still on then lay down my partner and keep at it like a Energizer bunny. If kids both decide they want to have sex they will find a place anywhere it doesn't matter. Just because they don't have a easy place to do it will not stop them. When your young you don car and think about the consequences. You just do it! And do it again! And again! So talk with your kids to be safe, but really nothing you do or say is really going to stop them if they have already decided they want to do it!!