I don't think our postie has missed a single day since this kicked off. Of course, he's been toughened up by his exposure to the bears*.
*When we first moved in we heard some strange noises under the house. Upon investigation we found him in our garage eating his lunch, which was a surprise. Turned out the previous owners had an arrangement with RM to drop off the mail bags so the postie could come and distribute. They'd not mentioned this. We didn't mind, though it seems they stopped the practice soon after, preferring instead to have postie drive around in a van with all the mail in the back.