What is good etiquette for a large group at a splash pad?

Large groups (15+ people) at splash pads are common and welcome but they put a real footprint on a public space. Etiquette: reserve a shelter rather than spreading across multiple unreserved tables; do not place coolers or items on splash pad surface; do not block jet access for non-group kids; do not claim every shaded bench when other families need them; keep music at conversational level and turn it off if asked; supervise the group's kids actively rather than relying on the assumption that some other adult is watching; clean up exhaustively (every cup, every napkin, every bottle cap, every popped balloon — balloons in particular are park-staff frustration #1); never bring glass; tip park staff if they helped beyond their job (cleaning a shelter, opening a restroom early); and acknowledge other families with smiles and small kindnesses. The cleanup test is the biggest one. A group that leaves a shelter perfect after a 4-hour party is welcome back; one that leaves it trashed gets remembered for years and may end up on a city blacklist for permits.