FAQ

The general rule is one toilet per 50-75 guests for a 4-hour event. For longer events or weddings, plan for one per 25-35 guests. Always factor in alcohol service - it increases restroom usage by 30-40%.

Restroom trailers are climate-controlled units with flushing toilets, running water, sinks, mirrors, and lighting - essentially a real bathroom on wheels. Porta-potties are non-flushing, single-stall chemical units. Trailers are standard for weddings, corporate events, and upscale gatherings.

Most trailers require a standard water hookup (garden hose connection) and a 30-50 amp power source for climate control and lighting. Some units are self-contained with onboard tanks and generators, making them ideal for remote locations without utility access.

Book 4-8 weeks out for most events; 3-6 months ahead for peak wedding season (May-October) or holidays. Last-minute rentals are possible but availability is limited, especially for larger combination units.

Yes - quality trailers include HVAC systems that heat and cool the interior, making them comfortable year-round. In freezing temperatures, the water lines need to be winterized or kept running to prevent pipe damage. US Mobile Solutions' trailers are equipped to handle varying climate conditions, including the heat and humidity common in the Carolinas.

Plan for at least the trailer's footprint plus 3-5 feet on all sides for door swing, steps, and ADA access. Delivery trucks need a clear path of 12-14 feet wide and firm ground - soft grass or mud may require ground protection boards to prevent sinking.

Pricing depends on trailer size (number of stalls), rental duration, distance from the provider's location, generator or water tank add-ons, and whether servicing mid-event is needed. Multi-day events and longer-term rentals typically get better per-day rates than single-day bookings.

Yes - waste tanks have finite capacity. For events over 8-10 hours or multi-day rentals, plan for mid-event pump-out service. A trailer serving 150+ guests for a full day will typically need at least one tank service. US Mobile Solutions recommends discussing event duration and guest count upfront to build a service schedule.

Combination units (restroom + laundry, restroom + shower, etc.) make sense for disaster relief deployments, work camps, or multi-day festivals where crews need full sanitation. For single-event rentals, a dedicated restroom trailer usually provides more stalls per dollar spent.

Larger trailers with more stalls reduce wait times significantly but require more setup space and power. For events under 100 guests, a 2-3 station unit is usually sufficient. Events over 200 guests benefit from a larger multi-stall trailer or multiple units placed in different areas of the venue.

Trailers can be leveled on most surfaces using stabilizer jacks, but extreme slopes (more than 5-6 degrees) can affect toilet functionality and door operation. Gravel is generally fine; soft turf may need reinforcement. Always share your site details with the provider before delivery.

For planned events, same-week delivery is often possible. For emergency disaster relief, experienced providers can deploy within 24-72 hours depending on distance and availability. Our experience at US Mobile Solutions - working with organizations like Red Cross and United Way - shows that having pre-arranged agreements speeds emergency response significantly.