It's been years since I shopped Lowes. Those in my area were bought by and converted to Harris Teeters. I recall the report being lengthy. I've been shopping Publix for several years now, since they moved into my area. There are several questions provided by the MSC to choose from for each required department. As Traveliz says, reasonable wait times are provided, so if you're not assisted within that time, you move on. Some scenarios require a deli purchase, but it can be as little as a slice or two of meat or cheese. My deli order generally is $1 or less. Another scenario requires ordering a sub sandwich, which cuts considerably into the reimbursement. The remainder of the reimbursement is yours to use as you choose.
I do lots of grocery shops. The Publix requirements and guidelines are straightforward. And, the report is typical (easy, with minimal or no narrative) for this MSC.