I wanted to visit Monaco in the evening for dinner as I will be based in Nice. It's my understanding that the trains do not run past around 10 pm or so and that Uber is banned in Monaco. Is my only option to get back late in evening by taxi or private car? How much will that roughly cost? Lastly, I also heard that if I walk up a path somewhere in and around the casino, I can order an Uber as I will no longer technically be in Monaco. Is this true?