Reimbursements can add significant non-taxable value. I have not paid for an oil change or tire rotation since 2005. Most days when I am away doing shops over the lunch time, I try to add a reimbursed lunch. Reimbursed parking fees for shops in the central city make it easy to do high value bank shops that other shoppers miss because they cannot find affordable nearby parking and cannot or will not walk or use public transit to access. Reimbursement-only hotel shops anchor many a 2-3 day shopping route where I am picking up high bonus remote shops. Back when my favorite grocery store was frequently shopped I grabbed a ton of those, getting not only reimbursement of groceries, but also, deductible mileage for that trip.
Also, when you are driving to and from a shop location, the IRS has no problem with you deviating a couple or three miles (each way) to add a personal errand. Getting a reimbursed car wash or dry cleaning or hair cut? Go via the bank and your grocery store, within reason. Shelter, shelter, shelter your MS income and gain non-taxable value AND buy MS purchases with your favored reward cc ! (More hotel rewards points!)
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.