Had a similar occurrence a few weeks ago regarding parking reimbursement. My company will pay for close-in hourly parking when a reserve is called in with less than 3 hours to push. I had it happen twice in December so I used my credit card to the tune of about $110 - no big deal. Fast forward a couple of weeks and I had some time to hang out in the lounge so I submitted my parking receipts to our base coordinator with nothing but my name and employee number written on them. Within 10 minutes I had an e-mail pop up on my EFB saying the request for reimbursement was submitted. The money was in my account 5 days later. It made me chuckle to think of how this process would have worked in the military.
Meanwhile, on the Guard side, I still haven't received payment for a 2-day off-station trainer I did in November because of some fuck-up in DTS that was beyond my control. Citi-Bank has already mailed me two notices of non-payment and somehow I haven't lost a bit of sleep over it.