The standard check-in time at AutoCamp Russian River is 4 PM, while the check-out time is 11 AM. These are relatively normal times for most hotels and accommodations, so it should be easy to plan your arrival and departure times.
Keep in mind that your door lock access is automatically enabled and disabled at those times.
Of course, if you need to check in early, just give them a call ahead of time, and their super-friendly staff will try their best to accommodate you. There are no guarantees, however.