What's the actual difference between an ADA unit and a 'wheelchair-accessible' unit?

An ADA-compliant unit and a wheelchair-accessible unit are the same thing if they meet the 2010 ADA Standards for Accessible Design. Some rental companies use 'wheelchair accessible' as a plain-language term for an ADA-compliant portable toilet, but it must include the required features: a 60-inch turning space inside, grab bars, compliant door hardware, and an accessible approach path. For your festival with 2,000 people per day, you'll need multiple clusters of units, with at least one ADA unit in each cluster to satisfy the ADA 5 percent cluster rule. Ask the rental company to confirm their units are built to the ADA Standards, reputable operators will assure compliance. Since you have food vendors and alcohol, plan for more units than the baseline guideline of one per 50-75 people for a four-hour event. Weekly service is standard, but for a weekend festival with heavy use, expect service before and after the event, or even during if it runs multiple days.

The terms 'ADA-compliant' and 'wheelchair-accessible' describe the same unit type if the unit meets the 2010 ADA Standards. Some rental companies use 'wheelchair accessible' as a colloquial label, but it must include all required features: the 60-inch turning space, grab bars, compliant door hardware, and an accessible approach path. For your festival, verify compliance by asking the rental company to confirm their units are built to the exact ADA Standards, as local permit offices may check this during event inspections. With 2,000 attendees and food vendors, plan for additional units beyond the baseline guideline to account for higher usage and longer duration.