Perhaps, after reading this horrendous story, Britons will know better than to spend their vacations in places that have been overrun by quasi-humanoid mutants.
Perhaps there's money to be made by operating GUN RENTAL shops outside every Florida airport! You land, you clear customs, you rent a car and a gun.... If, in conjunction with that, some sort of fast-track temporary CCW for foreign visitors could be arranged with the state, that would be a perfect solution.