Keep in mind that the Macy's store at Mall at Millenia is an original Macy's; all other Macy's stores in Orlando are conversions from Burdines. The Millenia store is by far the largest too and thus has the most lines of merchandise.
Thursday through Saturday editions of the Orlando Sentinel newspaper sometimes have ads from Macys that include a 15% off coupon. That's a little better than the tourist card. You can't combine discounts if you have both.
The Bloomingdale's store at Millenia also has a visitor discount card; go to customer service on the 3rd floor.
BobK/Orlando