To play up the deal and insurance angle, they put out 9,000 words of unnecessarily long (but hopefully entertaining) fine print regarding the offer (for reference, a double-spaced page of 12-pt Times New Roman or Arial font is about 250 words or so). You can find the fine print on their website here as well as a video of someone reading the fine print.
Additionally, from September 22 through September 28, 2020, you can get a free 10-piece order of Spicy Chicken McNuggets with a $20 minimum purchase placed through McDelivery on Uber Eats.
Photo via McDonald's.