We are staying in Newport Beach and would like to visit the Temecula Valley and some of the wineries for tours/tastings. We are looking for transportation from our hotel in Newport Beach, to the Temecula Wineries for tastings, then back to Newport Beach. What is the most cost effective way to do this? I have checked with some limo/tour companies and they seem to be running around $600-$800 for a 7-hour day, all-inclusive of taxes/gratuities/tastings tickets. Any other options we should try? Thanks!