Update: I recommend calling ahead to make sure that your local Sam's Club is planning to participate in this event and to confirm the date your store plans to participate. The information I received stated the dates listed below, but a reader informed me that it is scheduled for next week at her local Sam's Club.
Stop by Sam’s Club this weekend, August 3-5, 2012, you can enjoy their “Get In Free Weekend” promotion.
Non-members are able to take advantage of the same prices as members during this special weekend.
No coupon is needed and no extra surcharges will be charged if you’re not a member.