People can go at any time of year, but there are not so many visitors during the winter months. Special days, like the 11th of February, the feast of Our Lady of Lourdes, are very busy. The summer months are very busy.
Ill people go to Lourdes or if people have disabilities e.g. if someone was blind they would go to Lourdes to get their eyesyght back. Not everyone can get cured by going to Lourdes. Mainly the Roman Catholics but Methodists, Anglicans, Baptists and Presbyterians do too. Anybody is allowed to go but it is a place of pilgrimage so mostly religious people visit there
As with any place that attracts millions of visitors, there is a lot of commercialism in Lourdes. People do want to buy souvenirs from Lourdes and other practical items and local people need to make a living, so the commercialism serves a function. The most important features of Lourdes is within the area known as the Domain, where the churches and the grotto are and it is free of commercialism. The commercialism does not stop people going to Lourdes. Some people may not like it, but even for them, it does not stop them doing what they have come to Lourdes to do as part of their pilgrimages.
Pilgrims began going to Lourdes in 1858.
I am going to Lourdes > je vais à Lourdes - to go is 'aller' in French (conjugated verb in link)
Mainly it is Catholics going there on pilgrimage. Anyone can visit, so you will have non-Catholics going to see it, and general tourists. As well as the religious aspects, Lourdes is a big town, so people will go for other practical reasons too, like any town. There is also a rugby team there, as rugby is popular in the south of France, so some people would go to see matches there. But the vast majority of people that go to Lourdes are going there because it is a place of pilgrimage.
Yes, people are allowed to smoke in Lourdes.
Going to Lourdes is a pilgrimage, a visit to a holy place. So while on a pilgrimage to Lourdes or any holy place, you would be doing things like say prayers and going to religious services. In Lourdes you would also visit places associated with St. Bernadette.
Easter is the big annual HCPT pilgrimage to Lourdes.
It is mainly Catholics, but anyone can go and many people who are not Catholic go to Lourdes too.
they help people with problems
There is an airport near Lourdes, so many people fly to it and are then brought to Lourdes by bus. People also go other ways, depending on where they are coming from. They could drive, or go by bus or train. So there are many ways of getting to Lourdes.
All kinds of people go to Lourdes, beginning with the desperately ill. Many, many people over the years have found healing at Lourdes, as promised by Our Blessed Lady. Many of them haven't even been religious when they went to Lourdes, some of them were just desperate enough to try anything, but they mostly come back from Lourdes profoundly changed. God always heals people at Lourdes, not necessarily physically, but healing is always found. Some people are just pilgrims or devout servants of the Blessed Virgin. Many just come to pray.