If your invitation says “and Guest,” then yes, if not, we would prefer if it was just you.
There will be a shuttle bus service available from a handful of points along route 4. Not only is parking limited, but it allows you to enjoy your night without having to worry about driving. If you need to bring a car directly, there will be signs for parking about 1/4 mile east on route 4. This requires a slight walk to the ceremony. (If you need to drop someone off closer by, there is the ability to do so.) Drop-off in the driveway is possible for those who need it, but cars will need to be parked on the hill via the separate entrance.
While we understand if you want to use us for a day or two away, you're welcome to bring the kids if you'd like. Their names should be on your invite so you can RSVP for them individually.
For our ceremony--which we hope will be outside--and reception, you should wear cocktail or garden attire. Keep in mind that there will be a small amount of walking on grassy surfaces and that in mid-September it may have cooled off by the end of the night.