Cash Only!! No Debit/credit cards.
Be prepared to wait in a long line but it moves quickly, don't be intimidated. The weeks before Christmas the lines are long, but on the day I went, they had free cupcake sampling and a free raffle to win free groceries on the items you are purchasing.
Flour Tortillas only. No corn. You can buy them HOT, fresh out of oven. Or 'despegadas' unstuck at room temperature.
Their 'pan dulce' sweet bread and 'Rosca' Kings Bread is really good.