What is tipping etiquette in Paris?
Paris is a safe city and you are extremely unlikely to be the victim of any violence. The main danger is petty theft and you do need to be careful to avoid this. Particularly on the metro and on the RER line B between Charles de Gaulle airport and the city, thieves are on the lookout for unsuspecting tourists making stealing easy. Take sensible precautions, such as not carrying too much cash and dividing what cash you’ve got into separate wallets and pockets, and you should be fine. If you carry a backpack, as I always do, keep some money in your pocket and the rest at the bottom of your sack, so that it can’t be easily reached by the person behind you in a crowded train. As in the UK, if you are vigilant and don’t flaunt your valuables, you will almost certainly have no problem at all.