For the first time in 55 years, this week a hurricane and a tropical storm arrived almost simultaneously on Mexico’s Pacific and Gulf coasts, killing at least 80 people (with a further 58 missing) and leaving tens of thousands homeless. If that was a double dose of bad news on a three-day holiday weekend, Acapulco, the south-western resort where Hollywood divas once flirted with cliff-divers, was thrice-cursed