We've gone down pass few years in Sept., stayed through Irma wasn't bad due to fact alot of people left or reschedule, we only missed 1 to2 days at parks but were reimbursed for tickets.last year we were there another hurricane but we left early due to fact we druve and alot if roads became flooded .crowd levels aren't like spring and summer months ,cause schools are back in session . We love Sept. time.