Marseille Port - Private Tour of Provence

We would like a private tour for 10 people. Provence Connections can do 8, and I am waiting to hear back from One Day in Provence. Both companies I picked up from the boards. Any other suggestions of companies that can accommodate a private tour for 10 people please?

We are a family group of 10; 6 adults, 4 children. Ranging from 7 to 80!

We are in Marseille port from 7am to 6pm on Sunday August 21st.

In our short stay in port we would like to experience Provence. Interested in seeing the highlights of Marseille, Aix en Provence, Cassis. A variety of points of interest would work for the group - wine for the adults, historical, beautiful. Anything of specific interest targeted for kids. After doing a little research on the fact it is a Sunday I wondered if a different selection of places would be better; L'Isle Sur La Auge, Les Baux maybe. Appreciate input on cities, thinking three.

Thanks