Wave on your way by! What sort of activities do you like? Hardcore mountain biking is a key attraction there right now, but there is a ton of gorgeous scenery to see via hikes/walks in the area.
Have you ever done the drive? It can be nerve-wracking, especially when you're new to the road, and there can be delays for a wide variety of reasons, so you might want to prepare for that possibility. Snacks, things to occupy the kids, etc. just in case.