We did not take any tour in Monte Carlo. We took took the bus - very very convenient there and very very clean. Cost us $1 Euro each way to the casino. Did not have to walk up anything. The casino to enter it - costs $10 euros and you pay to go deeper into each room. For us - not worth the effort. Got pictures from outside. Cobblestone can be nasty on your feet - stay away from sandals - good walking shoes best. Princess was charging 40 euros for tour of casino and quick little drive around similar to what you get on a $1 euro bus.