I was thinking about how law enforcement and safety is handled in other situations where there are large groups of people gathered. Texas Football, concert venues, Texas Stars, HS football, graduations, etc. Those businesses and school districts call on (and pay OT to) state, county, local officers to be present and keep people safe. Can't swing a toothless Sooner without hitting DPD, Dallas County deputy, DPS, etc. at the RRS.
Yes, it's a different scale - bigger area, less cell coverage, longer period of time - but it's hard to believe those camps and/or county can't pay OT to sheriff, DPS, BP a few nights a year to keep watch over several thousand young campers and families that are bringing in millions (10s of millions?) to local businesses. Hell, even if it's just one patrolman per camp, at least you can have urgent communication going out to those onsite or nearby officers, they can wake counselors and coordinate evacs to high ground or to better shelter if tornadoes hit.