Does a private party on private property have to follow the ADA porta potty rule?

Jules is correct that the ADA 5 percent cluster rule does not legally bind a private party, but the rental company's question is a standard part of their intake. They ask because they deliver to many events that do require an ADA-compliant unit under permit rules, and they want to ensure your order is correct. For 70 people over eight hours with alcohol, the planning guideline suggests more than two standard units. The rental company will place the units on level ground for stability and ensure truck access for delivery and pickup. Your aunt's comfort is a practical reason to include the accessible unit, which has a wider door and interior turning space.

No, the ADA Standards for Accessible Design do not apply to a private family reunion on private property. The ADA 5 percent cluster rule is for public accommodations and commercial facilities, not private social events.

For 70 guests over eight hours with food and alcohol, two standard units are too few. A common guideline is about one unit per 50 people for a four-hour event, but you need more for duration and alcohol. Consider three or four units for comfort. Since your aunt uses a wheelchair, an ADA-compliant unit is a practical choice even if not legally required. It provides a larger interior, grab bars, and a level entry.

If you skip it, there is no ADA violation, but your aunt may struggle with access. The rental company might note the lack of an accessible unit, but they will deliver what you order. Servicing is weekly normally, but for an eight-hour event, no service visit is needed during the rental.