Use the facility information selectively
The City of Seminole publishes facility details. Check the exact space and existing restrooms for your planned activity, rather than transferring assumptions from another venue. Ask its contact about extra sanitation equipment and the area in which it may be placed.
Explain the gap temporary facilities must fill
Describe unavailable hours, separate activity zones or particular washing and accessible needs. Review equipment against that gap. Include supplier entry and removal in the discussion so the proposal covers a workable arrangement instead of an unexplained number of cabins.
Local planning references: City of Seminole facility information