In my experience I can say that traveling with a group always requires clear organization, especially when it comes to transportation. We have organized
travel in Lyon by bus more than once and used the services of the same company for renting minivans. The drivers are punctual, the route is well thought out and the cars are very comfortable. This removes a huge layer of worries and allows you to focus on the journey itself. If you want a trip without too much fuss, it's definitely worth a try.