A Hindu marriage is extremely complex cultural mechanism- with numerous permutations.
Every Hindu wedding, however, evokes the same sense of archaic rhythm; the rituals you are witnessing occurred before you were born, and they will occur long after you die. The reason for this is not immediately clear- weddings, and by extension, society, evolve and mutate into something entirely different with each passing year. Then you realize something- the rituals of a Hindu wedding are like oral storytelling. They have been passed down, generation to generation, over the thousands of years of otherwise constant change. They have been kept alive by a fervent passion for heritage and culture. So know that what Hindu wedding rituals you see now will invariably be passed on to the next generation of Hindus, to be replicated in their antiquated glory in the future.