Oh dear, a gross miscaclulation on my part. It would be after midnight before we'd be there, after over four hours and $65 worth of travel. For some reason, I thought Portland was less west, and Oregon less wide than it actually is based on that minimap. I might have to skip this one, and wait for a first time experience that isn't as far away, or where we can leave before 8 pm.
I'll see how I feel closer to when the time comes. Maybe it'll feel more worth it to me then.