Walmart

Couponing at Walmart is pretty straight forward. If the coupon is worth more than the item being purchased, the coupon will beep. Usually, the cashier will push it through or they will adjust the coupon for the amount of purchase. If they adjust the coupon, they are supposed to write down the adjusted amount on the coupon (so they only get reimbursed for adjusted amount).

I always check out at the SCO (self check out), unless I have coupons that need to be adjusted or B1G1's. Some stores have a limit on the amount of coupons that you can use at SCO. There's not any rhyme or reason to it though - some report it's a certain dollar amount, others say it's a certain number of coupons??