We arrive in Nice on May 24, and planned a tour of the French Riviera on the 25th. Was notified tour company can't go to Monaco-Monte Carlo during our stay due to the Formula 1 race. They suggested Menton instead, but we don't want to miss Monte Carlo and are F1 fans, so the race preparations might be fun. My question is will we be able to go by train? Do you need to make a reservation for a day trip to/from Nice? Are sights still open, or should we just avoid?