Don't bet on getting the credit posted. A long time ago, I declined the USA Today and got no credit for my stay. I wasn't going to raise a fuss over a 75 cent credit.
I see the availability of the WSJ as a plus for Marriott since Hilton never offers it at limited service properties and Hyatt only has it at some full service properties. For those guests who like reading the WSJ in paper form, it is nice to know that almost every Marriott property has one.