They get the frozen stuff last.
We got frozen shrimp in our last pickup order. I had a really GREAT coupon I couldn’t pass up. Every single shrimp was intact/individually frozen still when it got to my house. And that was *after* an hour ride in a cooler with ice back to our house. I ‘rattled’ the bag. No congealed mass of refrozen shrimp to be found.
Not at my store. That is the point. I watch them as I am shopping.
They might get a box of frozen XYX..then the cart goes maybe to the medicine aisle...then maybe to the vegetable aisle..etc.