When you visit Paris, you'll be akumatized in a few minutes or be chased by an akumatized villain! Here's a few examples:
Comes to visit Marinette on her birthday and gets akumatized into La Befana.
Marinette's great uncle comes to compete in the World's Greatest Chef Competition and gets akumatized into Kung Food.
Comes to Paris having transferred there and made up a huge lie about her life to become popular. Gets akumatized into Volpina.
Comes to Paris on business and ends up being chased and brainwashed by Princess Fragrance who is Rose Lavillant akumatized.
Came to Paris recently with her mother. Loses to Adrien in fencing and is akumatized into Riposte.
Therefore, I conclude that Paris is not the best place for tourists at the moment.