Typically, a person begins to actively engage in weddings at approximately 25 years old and continues doing so until around 65, which totals 40 years. As the number of weddings a person attends can fluctuate significantly due to various factors, let's conservatively assume this averages to about one per year. Therefore, over the course of 40 years, this would amount to 40 weddings attended throughout their lifetime. However, keep in mind that this is a general estimate, influenced by a range of factors such as location, culture, community size, and individual lifestyle.