How is May Day celebrated in France?

On the eve of the 14th of July, people can attend various public balls in the evening, often held in fire brigade barracks, and many towns have fireworks. The next day (14th) is France's national day and all businesses are usually closed (a number of them are closed anyway for the summer holidays). It is very common for people to watch on TV (or on the spot for the Parisians) the military parade on the Champs-Elysées, and enjoy the day off. In the afternoon, a mountain stage of the Tour de France is certain to draw millions of telespectators.