I also echo the caution on blocking your door to stockpile. Once you re-open, all the food that should have sold in the time you closed will sell instantly. Ask me how I know-it happened to me twice; the second time i earned over 2 million coins in 10 minutes and all the food I'd spent weeks stockpiling was gone.
What ended up working for me was blocking the cash register so customers could still come in, but couldn't buy anything.



