Complete offline flight planning and image capture in remote areas?

Hi there,
I am evaluating suitable solutions for a mapping mission in a remote area in South America with no Internet connectivity whatsoever. The exact locations to be mapped can only be determined on site. I will not be able to access the dronedeploy cloud at any time between flight planning and data capturing, neither via Desktop/browser nor via mobile.
Is it possible with dronedeploy to plan a flight in the field and capture data without ever having internet connectivity? If so, what would be the workflow?
Thank you very much for your help!