300-person corporate picnic with a beer tent: how many units?
I'm planning a 300-person corporate picnic that runs five hours, with a beer tent and catered lunch. The site is a flat park with truck access along the service road. HR is pushing for better-than-average facilities to avoid complaints, they want no lines and clean units all day. I'm budgeting for porta potties and considering a mix of standard units and maybe one deluxe or ADA-compliant unit for accessibility. How many standard units should I order for this crowd size and duration, especially with alcohol involved? Should I add extra units beyond the basic guideline, and is a restroom trailer worth the cost for a corporate event?