My sister and I are planning a trip in early September to take our 89yr old mother back to see the places where she grew up. My sister and I have never been to the area and we would love some advice. Mom wants to see Yakima, Yakima valley, Mt. Rainier (not to hike, just to see), and Portland. She wants to take the Oregon side of the Columbia River to get from Yakima to Portland. That road looks beautiful - but it looks like a scary, lengthy drive. Some questions - would you recommend flying into Spokane to drive to Yakima - or flying into Portland to drive to Yakima? We'll be staying probably 2 nights in Yakima. We will fly home out of Portland for sure - how long and scary would the drive be to get to Portland from Yakima if we take that historic Columbia River highway on the Oregon side? Our total trip will be 6-7 nights. Any advice about any portion of the trip would be appreciated! We won't have too much time for tourist sites since most of what mom wants to visit are places she remembers from growing up there. We're mainly looking for route and travel advice.