The tour guide, Mr. Bar, is good at explaining and also friendly. The minivan driver is driving carefully, so I feel safe for the long journey. From the city on the way to Cu Chi Tunnel, there is one stop at a handicraft factory that you can optionally buy from or just have a small meal and use the toilet.
From Cu Chi Tunnel on the way back to the city, they will stop at one restaurant that if you want to eat at your own expense as per mentioned/description in the tour itinerary already.
So far, it's the best value service for the price they have given.