According to a recent article about Cozumel and an interview with Cozumels mayor in the magazine "Alcaldes de Mexico" , or Mayors of Mexico, the mayor says tourism is down 10 percent. I am sure this is no surprise but it is good the mayor is saying it comes from a slowdown in the cruise business and the island is promoting itself as a meeting and convention destination. This would be good since more money would be spent on the island per person than with cruise visitors.
The article also mentions discounts and promotions are made available to ship crew members who often spend as much or more than the passengers from the ships.
I hope the mayor has good luck with his promotions. The island economy needs it.