A concur. When I travel for business and I get vouchers for meals I use them. If I got a free hotel I always took it, but lately the quality of hotel and sleep I get (and occasions that actually grant them) makes me prefer to get a hotel room comparable to a normal stay and just expense it. Since there was no additional expense and the payment is for inconvenience, not for expenses incurred due to delay, the OP is entitled to this payment. I'd run it through HR just in case because word travels fast in my company even when you tell no one. If I incurred hotel and food costs I'd probably turn in the money.

I had a WX issue cause me to fly into ELM instead of ITH. I got a rental car (that I wasn't allotted for this trip otherwise) and submitted the receipt to Delta. Delta paid, I never submitted that receipt to work. If Delta hadn't paid before I submitted, I would have turned the check over to my company after the fact. Not worth being fired over $140.

I have no qualms about expensing meals/hotel/parking after legitimate delays, but ->

If I VDB'd I'd consider everything beyond what I usually would have expensed on my own....except parking. I do break up parking if I have a couple personal days in a business trip, but the way the parking is charged usually doesn't factor in unless it's a whole 24 hour delay.