Napa Valley Wine Tours is perceived as one of Sonomawinetours2Go's biggest rivals. Napa Valley Wine Tours was founded in 1993, and is headquartered in Napa, California. Like Sonomawinetours2Go, Napa Valley Wine Tours also operates in the Travel, Recreation & Leisure space. Napa Valley Wine Tours generates $1M more revenue vs. Sonomawinetours2Go.