Everyone that lives in that trailer is morbidly obese though, so even if only one person does the shopping, it's enough food to support all of their habits. At any rate the food's coming from somewhere and has been for many years, no reason to think a few hospital trips would change that. As for the loading and unloading, I don't know about Amy, but I don't think Tammy can actually walk or stand longer than a few seconds. Every time Tammy walks she looks like a waddling troll who is struggling with each step - hell there's a video of it somewhere in this thread.