Entrance fees to the sites are not included. However, your driver will be more than happy to assist you in getting your tickets. Your local driver will share information about each site and provide additional guidance before your visit.
Keep in mind that the driver is not a professional tour guide and he cannot accompany you as such inside a historic site or provide detailed historical information like a tour guide would do.
If you would like to book a tour guide in a specific site or for the duration the sightseeing ride, you need to inform the driver and ask him if he can arrange that.