Yeah, the "online only" aspect of the discount hasn't been a problem for me, since I find talking with the FedEx "service people" at the counter as mind-numbing as dealing with them on the phone, but some do find it a bit less convenient.
You can view recent billing activity by going to the "Manage My Account" tab on FedEx's home page (I think this, like many of their online features, requires registering
again which is ridiculous, but whatever. Using the same account number works fine, as it should.) then clicking on "View/Pay Bills Online". I'm not sure if this feature is exclusive to shipments created using the online ship manager or not, but you may at least find it useful in the future.
If you go through the "help" files, you'll find that they instruct you to file for a refund for a package delivered late by going to the place I directed you above, then placing a "Service Failure" dispute on the affected shipment. Like I said in my previous post, I've been fortunate that this has always worked
automatically, with no argument from them. The one bad part is you can't dispute it the day it arrives, since they bill your account weekly. You have to wait for the bill to appear.
Hope this has helped a bit!