At In N Out or Chik Fil A sales have gone down in shelter-in-place states. I went to In N Out a few weeks ago before they closed the dining room for takeout and no one else came inside and literally only 4 cars in drive-thru at 3 PM. Sales have not gone down at retail pharmacies.
If you did pickup-only drive-thru at the pharmacy it might not be so bad
My retail experience says the public is pretty filthy all over. I've been hearing of horrible conditions all over retail right now. I'm thankful every day that I escaped that cesspool.
We are encouraging people to pull up in the parking lot and we are carhopping. But we also have a lot more latitude than a state-regulated pharmacy. All you need is a Major General to agree and amazing things happen very quickly.