Whats the deal with tripods in Paris?
By and large tripods are forbidden from public spaces like Palais Royal, without a permit. You can expect to see someone in a dark blue uniform come up and ask for your permit. If you don’t have one, they’ll kindly tell you that tripods are forbidden and might ask you to leave. At worst, you might get the waving of a finger to indicate “No, not allowed”. You could set up you tripod ahead of time and then move into position to quickly get your shots before anyone has a chance to arrive ask a question. In any other part of the city, in the streets I’ve never had a problem.