One of the worst travel experiences ever
We arrived at 12:40 am last night to find a very old man behind the desk (I am not an ageist but this individual looked like he would struggle to even stand). 
I was informed that my room was given away, no other rooms were available in the nearby area, and I would have to stay at a downtown hotel in Jacksonville.
The desk person was completely overwhelmed when I even asked to see whether there may be more amenable nearby options.
Later I found that the manager had called me at 12:28 to ask me to call her (she did not mention the room was given away). 
I gather reservations at this location are first-come, first-serve, catch-as-you-can.
The hotel they booked us in required valet parking, was an isolated high rise with very expensive breakfast, and charged $ 9.95 for internet. 
In total, not including the round trip inconvenience - we had traveled 1.5 hours to the hotel, arrived exhausted, and we had a 7:30 am meeting that was no longer nearby - the lack of sleep, the extra gas, etc. this little glitch cost us $40.00.
I travel frequently for business, and the last hotel chain that did this to me - a Holiday Inn Sunspree Resort in Florida during the 1990's that relocated us to another Holiday Inn with no amenities - I have never frequented again.
While this was expensive for me, in the long run, this will be more expensive for Marriott