The most common hand gesture is the "wave," signalling or saying hello to someone.
Grilling
There are many ways, but possibly most common would be to fly to Paris, Milan or Rome then drive or take the train to Monaco
He used a common hand gesture to summon a crab.
The croupiers are the most popular people in Monaco.
There is no common "Masonic hand gesture". You may be referring to Masonic grips, which vary depending on the degree one has attained. These are considered secret, and are therefore not revealed by obligated Masons to non-Masons.
The steel guitar is the most played instrument in Monaco
Some common foods in Monaco are pizza, pasta, crepes, croissants, and quiches.
The most common symbol for service is typically a stylized image of a helping hand, often depicted as one hand reaching out to another hand in a gesture of support or assistance.
Monaco is the most densely populated country not only in Europe, but the entire world.
Monaco is actually smaller than most airports. Try Nice.
They are all race tracks