50-person backyard wedding with heavy drinking: 1 or 2 units?
We're having our wedding in my parents' backyard in October. It will be a 50-guest evening event with a full dinner and an open bar for about five hours. The ground is level grass, and the driveway has room for a truck to get in and out. I'm trying to decide between renting one or two standard portable toilets.
I keep reading that alcohol increases usage, and I really don't want a long line forming during the reception. The rental company's basic guideline for a party this size might suggest one unit, but that seems to be for events without alcohol. I'm worried that with 50 people drinking for five hours, one toilet could get overwhelmed quickly.
Is one standard unit enough for 50 people with heavy drinking, or should we definitely get a second one to prevent lines? Does adding a handwash station change the math at all?