Best SLO/Edna winery for an engaging large group tasting?

I'm in charge of planning a wine tour later this year for approximately 30 people, and I'm looking for recommendations for wineries that are able to do more than just a typical tasting presentation. I've been to my fair share of wineries in SLO and Paso, but never with a group this large.

Unfortunately, Paso isn't a great choice for this event because we will be leaving from Avila and need to be back by 3.