Give handwashing its own place.
A separate handwashing station lets one person wash while another uses the toilet. It is a useful addition for multiple restroom units or an event with food. The standard non-heated portable station is self-contained. Ask about a different configuration if your site requires a particular water temperature or plumbing arrangement.
Model reference: PolyJohn Bravo BRA2-1000
The Bravo uses foot pumps. Its published dimensions describe the equipment itself; leave room for users and replenishment. Tank capacity is not a guarantee that a station will last the whole event. Usage, washing duration, and refill timing affect the service plan.
Plan replenishment alongside waste service
Ask who refills fresh water, collects gray water, and replaces soap and towels. For an Allen festival or a multi-day sports gathering, give the team peak attendance and the hours each area is active. Several stations distributed near restroom groups may be more useful than all stations at one entrance.
Hand sanitizer and handwashing differ
A sanitizer dispenser does not provide soap-and-water washing. Let the team know about food handling and any venue, health, or jobsite requirements so the quote specifies the right equipment. See construction sanitation planning for the OSHA reference.