It helps if you don't phrase it like this: "The employer provided room and board and food while they are gone. They would get dropped off in neighborhoods and canvas all day and return at night."

Because there is no employer, for 1099-NEC. Or, you have a case of Worker Misclassification to deal with.

If the reported amount includes any of these costs, then you would include them in the Revenue and include the costs per the Sched C provisions.

Read this starting at Direct Seller under Selected Occupations:

https://www.irs.gov/publications/p334#en_US_2020_publink1000313419