And we'll be using it for a long time. Strict access into the Wizarding Word is not only inevitable but also for safety reasons! Which is why I can't picture them having another entrance into the land, at least not initially. Maybe as an emergency exit,but not secondary. That would also ruin the magic. Also, even if they have an exit only pathway, you'd need to pay a team member to stand by it to make sure no one walks in.