A woman I know has her member niece order stuff for her in order to get the free premium shipping. Waited a tad bit too close to Christmas, and she didn't get the stuff until days after the holiday.
Frankly, no surprise thanks to the weather and cross-country origin of the package, not to mention the spike in overwhelming of the package delivery services with the demise of the brick-&-mortar supply model.
We use our Prime subscription all the time. Even on everyday items. If I can make a few clicks and save myself a trip to the store on stuff I don't need right this second, I do it.
Now, if only the grocery option was a little better. You can get groceries, but I don't think the same great shipping applies.
Although we do get some specialty items that are non-perishable there.