Get a water cooler for bottled water and some "extra" five gallon bottles of water. No rotation worries.

5 gallon buckets/lids and kitty litter for toliets. One for every four or five persons.

Get some of those ARK "suvival kits". About $15-20 and have rations/ water/ personal FAK/mylar blanket/light. One per person and they should mantain it at their desk and be responsilbe to produce it for random checks.