I was fortunate to ride out the Sun-N-Fun storm in an exibit building. I agree that other than vendors with internet connections (trade-a plane in our case), warning of impending serious weather was slim. We thought that the lack of PA system in the exibit buildings or announcements on the flight line were obvious omissions. Something I hope Sun-N-Fun improves upon in the future.
Immediately after the storm I met Paul re-entering the building by Wick's booth, after a short drive around. I mentioned "just like Oshkosh week, eh Paul"" to which he gave me "the look" that spoke volumes, and said "Nooo, MUCH worse!" I KNEW what he ment moments later as I glanced outside.
Having been to a LOT of EAA Fly-In's in RFD, then OSH (40+), I can say with certainty that they make every effort to get the word out. I've been woken at night on the flight line by loud speaker announcements, in Camp Scholler by security cars driving by with bull horns, you name it. Its the midwest in July, it happens, they know it, and know what it means to take care of the people there.
Its great to have a plan and I see you're well on your way to having a good one.
Happy Landings, See you in OSH!