I think your right. Anyway, they stay at their own risk.
We were stationed at Eglin Air Force Base at Ft. Walton Beach for three years. We came close to having to evacuate once, but didn't have to.
But we were ready to head into Alabama! Far north as we could get. Never had to leave though. But the back yard sure got flooded.
We have relatives on the gulf side in North Port, Crystal River, Marco Island, Naples and Bradenton. I would imagine they are going to have a bit more rain than usual.