We're always concerned about preservation. It's one of the priorities.
The way we manage visitation is that we very carefully concentrate visitation in areas of the park where we can actively manage its use. We work very carefully to design infrastructure that's going to have a minimum impact. For example, we have dune crossings. Wherever we need to restore dunes, we've discovered that dunes are really quite resilient. If you close off a dune for a period of three years, you can actually build it back up. Where we find that there's degradation taking place, we'll close the dunes down, or if we've had a blowout because of a winter storm, we'll do the same thing.
It's mostly managing how the use is done by visitors.