200-person concert with a bar: how many porta potties?

For a 200-person concert with alcohol and food over six hours, you need at least eight portable toilets, including one ADA-compliant unit. The baseline guideline is one unit per 50 to 75 people for a four-hour event, but alcohol consumption and longer duration increase usage. Add extra units because alcohol acts as a diuretic and the event exceeds four hours. A restroom trailer is not overkill for 200 people; it provides flushing toilets and sinks, which guests appreciate, especially with alcohol served. Trailers require level ground and electrical power, often from a generator. Servicing frequency depends on use: for a one-day event, units are delivered clean and serviced post-event, but heavy use or heat might require mid-event service if arranged. Costs are driven by unit type (standard vs. deluxe vs. trailer), rental duration, service needs, and delivery distance. Place units in a cluster with clear truck access for efficient servicing.