What's the real benefit of a flushing portable toilet?
I'm planning a corporate event for about 150 people over six hours, with catered food and an open bar. The venue has grassy level ground and good truck access for delivery and service. I'm deciding between standard portable toilets and flushing units. A standard unit has a simple holding tank with deodorizer, while a flushing unit has a porcelain bowl, a foot pedal flush, and often a small sink with running water. The flushing type feels more like a permanent restroom, which might suit a corporate crowd better. But I know they cost more to rent and may need more frequent service due to the fresh water tank and gray water handling. For this size event, is the upgrade to flushing units worth it? Should I mix a few flushing units with standard ones to balance cost and comfort?