For anyone who is interested, here is the info I've gotten so far for BRU and BBB.

Both stores only allow discounts on the bigger items like cribs, car seats, etc.

BBB's policy is you get 10% off the second item. Kind of sucks. The girl actually told me I'd usually do better with a coupon.

BRU - I went to the one in Massapequa Park - I know this may vary by stores but...I bought 2 cribs. I got 10% off both AND I was able to use a coupon on 1 of the cribs and got an additional 15% off one of the cribs!!!! Watch what they ring up because originally they gave me 10% off one crib and the coupon discount of 15% off the second crib (insted of on top of the 10%). I complained to customer service because I was told the coupon was in addition to the 10%. She confirmed with the manager and I was right and they gave me the additional % off!