I am not sure what outfitter you are dealing with, but you should have a pre-arranged meeting time and plan accordingly. The cell phone may be a backup if something goes wrong like high winds, etc.
Not sure in that section, but I had coverage on Indiana Lake, through Back Bay and Hoist Bay...
Just finished, [section] hiking the traditional Superior Hiking Trail, from Martin Road to the Otter Lake Road 270° degree overlook. (2017-2020)