I need this: Customs and Traditions of the French that has to do with the holidays?

It is for a French Essay on holidays in France. HELP ME!! Please, because i cannot find anything really. and the good sites say that say what i need to know are blocked by the school. Help is greatly appreciated. Thanks ahead!

Customs checks on ferries to France from UK…?

Are bags checked at any point, are cars searched? Last time I went, I don’t remember any searches, but it’s been a while. How can it be safe with no checks?