I have read that you must fill out the health questionnaire at https://afac.hostingerapp.com each time you arrive or show up to depart from the Cancun Airport. I won't have any cell phone service in Cancun.
I've read multiple sources saying there is WiFi at the airport, but it is extremely unreliable with one person saying it took them over 2 hours to finally be able to fill this form out. Can I just fill it out while waiting for the plane to take off in the US and show that in Cancun, then fill it out again using my hotel's WiFi for departure?