We are a family of 5 (three kids 9, 6, 3) planning a trip next year from Phoenix to Fresno. We want to explore along the way, and one leg of this trip takes us from Zion to Yosemite. We planned to stay just West of Zion (possibly Mesquite, NV) after a day of hiking, then it was on to Lee Vining Ca, via Tonopah for the next night before Tioga Pass (if open ) into Yosemite. My question is: Is the drive from Mesquite to Lee Vining too long for a day's drive with three kids? We didn't plan to hop off the road that day for much other than breaks for food, etc. Any one have any advice?