None? 267 sailings out of Galveston currently available for the next 2ish years.
So maybe it's NOT "ALMOST every [emphasis mine] embarkation from ... the future, Galveston is making a stop at CoCoCay."
Not necessarily. Turn on airplane mode---then turn Wifi & Bluetooth back on (you'll need Wifi to use the app). Your intent is to disconnect from cell service, NOT Wifi.