Well…If you think it is a celebration of intoxicating proportions, you are partially right, but if you wanted to get all Wikipedia nerdy about it, Cinco de Mayo is not a National or Mexican holiday nor is it Mexico’s Independence Day, like peeps might believe it to be.
The United States has taken over this unofficial holiday to give people more of a reason to let go of their inhibitions and party on with drunken madness, but it has become commercialized.