Large gatherings are an integral part of social, cultural, and economic life. From festivals, concerts, weddings, exhibitions, and sports events to political rallies and religious congregations, such occasions often attract thousands of people within a limited space and time. While event planning usually focuses on logistics like security, seating, sound systems, and crowd control, one crucial aspect often determines the overall experience—sanitation. Inadequate restroom facilities can quickly turn a well-organized event into a public health concern.