No need to get crazy building bunkers.....these buildings look pretty disposable and easy rebuilds. The storm that will do the damage will come every once in awhile causing flooding (destroying the OSB) and/or blowing the structure down......by that point it was probably time for a remodel anyway (and perhaps it will be on insurance dime). You could say that its unpredictable when these storms will come and maybe it won't conveniently fit their 'remodel' schedule but that is the gamble they are willing to take. If storms came during the high season then you would probably see iron clad structures in order to not close and keep the revenue coming in but since most storms come in the late summer it gives a nice window to rebuild before the bulk of the tourists start to come again.

They are either currently slow as molasses because there is no need to be fast OR the inspections take forever. Once the foundation was set I don't see why any decent construction crew couldn't erect each of these buildings (skeletal and moisture covered) in two days or less. They are basically garages.