Important days have been celebrated by crowds in a number of countries and all these activities have pros for these areas. In my perspective, all those days have financial benefits for these countries.
People around the world have prepared parties for specific days throughout the year. First, those days have positive aspects to society. People have the opportunity to sell some souvenirs to tourists like bracelets, which are famous in that country. In addition, humans have the opportunity to share their feelings and foods throughout the celebration. They can even find their sweethearts. Some business people can sell their products like meat and jewelry. The majority of people prefer to eat food like vegetables which includes vitamins or want to buy a glamorous thing like a bracelet for their unclear family.
In my own opinion, people can motivate their emotions at these times. Even single people have a chance to know more people and, if they want, they can share their feelings. Moreover, many countries can be famous around the world by showing their special days, like fire nights, on TV and these might be effective because they have a chance to absorb tourists around the world. Also, if they bring a party, some charities can earn money by organizing a competition like sprinter on these days to help to reveal the environment. For example, they can buy trees for planting in the habitats and all these could be jungle in the future.
All in all, all those days have positive aspects to society. Many people have a chance to have a fun time, but humans have a chance to sell their souvenirs to tourists, and they can earn money. Also, countries like France could be famous around the world by inviting reporters from foreign countries to make report from these festivals, and they have a chance to absorb many tourists in the future.