Once a year my city organizes a huge music festival.
It lasts four days and gets some pretty big bands coming to perform.
The hotels in the area get booked up so fast that most people drive campers or just pitch a tent in the fields. A big part of organizing the festival is getting toilets for all the people there. Port a potties are not a good long term solution. First, it is only one stall without a sink. The port a potty gets full and out of paper immediately. We would have to buy tons of port of potties in order to meet the demand of people. What we end up doing every year is modular toilets. A shipping fabrication company sets up the modular toilets for us. We get 12 individual stalls, hand sinks and showers with only one unit. It is a totally turnkey solution. The moment the container arrives, it is ready to use. It is a one time cost to purchase it and the company picks it up on time when we want it gone. Every corner of the music festival has this giant modular building set up. It is nice to give people showers too. Not only does it decrease the smells and increases comfort, it gets more people to our area. That we offer plumbing to everyone has seriously increased traffic to our festival. The modular units even have HVAC in them. On colder days it is not uncommon to see a bunch of people huddled in the bathrooms. It has been a really good thing for our concerts