The meeting point was easy to find. The double-decker bus for transportation operates on a first-come, first-served seating basis, so it's recommended to arrive early! The upper deck is more popular, but the four-person seats on the lower deck (with tables) are a hidden gem! We stopped at a service area once for a break before heading to our destination. I highly recommend this bus tour because I felt very safe and was able to sleep soundly on both the outbound and return journeys! The guide explained so many things, but I couldn't understand what he was saying at all because I don't speak English. He talked non-stop the entire time. At the destination, we took the bus there and walked back (you can choose). We stayed for about three hours, and it was incredibly fulfilling! It's recommended to act quickly for the return bus as there's a long line. We had one more restroom break on the way back and returned to Paris after 9 PM.