Sam's Club is offering annual memberships for just $20 a year. Here's what you need to know to get the big discount.

As Sam’s continues to simplify its Member’s Mark ingredients list, the store is highlighting a “first-to-market” product that stands out in its “Made Without” lineup:

At bulk retailers like Sam's Club, you often cannot enter or make a purchase without flashing a membership card - but these rules don't apply when buying booze.