Or do what I do and buy nothing but the occasional deeply discounted item in the app (free 10 piece McNuggets with $2 purchase, $1 breakfast sandwich, free fries [no purchase necessary]).
I posted this a month ago:
"At my location I can get an iced tea with free refills. Then I fill out the survey listed on the paper receipt and use that to get a buy one sandwich get one free deal."
The BOGO requires a manager thumb print, so order at the counter. Always say nice things in survey. I'm told managers read them to the staff.
Especially for your blood vessels, liver, pancreas, …