We've made many trips to Chula Vista RV and the drive is a piece-of-cake from Tucson via the 8. The mountains outside of SD are pretty steep but very do-able. We absolutely love Chula Vista RV park. Ignore your GPS if you're using it. It will have you get off on 'E' street, which is a big mistake. Get off on 'J' street instead. Make sure you bring your bicycles - we love tooling around the area, the marina next door, the city park around the rv park, etc. We'll be out there Oct 1 for a week (Miramar airshow). Counting the days.