Is there a shuttle from the airport to the resort?
No, you can reserve a shuttle, get a taxi, or reserve a car.
amstardmc.com/en/destinations/mexico/cozumel/
Excursions?
Cin and Deb plan to book multiple excursions, and everyone is welcome to join us. We are hoping to get scuba certified before we go so we can get a better look at the reef. Last time we went the snorkeling was our favorite experience. Here's a website to see some of the excursions: amstardmc.com/en/excursion/cozumel/
We'll post it here when we firm up our excursions.