I also got the fee waiver from W&L. Like you, I was wondering "what the hell is going on?". My numbers are good enough to get a fee waiver at *some* T2 schools, but no T1 school in its right mind is going to give me a fee waiver w/ my paltry LSAT of 162.
So, I got my physical application all together because the waiver said "you have to apply with a physical application, not electronically, to take advantage of the fee waiver". No problem. But as I was filling out the application on line, I said what the heck. I'll submit my app electronically and just send it in physically too w/ the fee waiver. What's the harm.
Anyway, the LSACD-on-the-web thing shows you all of the electronic apps you've submitted. One of the columns showing you all of your apps is called "App Fee Paid Via LSAC". Either a Y or an N appears in this column. For schools that allow payment via credit card, a "Y" shows up. For schools that require you to send in a check w/ the certification letter, an "N" shows up.
Well, something strange about W&L. It's the only one of my 7 apps so far with "No Charge" showing up in this column.
I suspect W&L might just be waiving fees altogether? Hmmmm ... I don't know. Very strange.