I arrived very late to spend the night at the Bellagio Hotel, Las Vegas, due to mechanical difficulties with my flight. The check in clerk and his supervisor said my reservation (prepaid) was voided when I did not arrive before midnight to claim my room. They then offered me a room at the rack rate (instead of the advance purchase rate I had secured at their website). I declined their offer and I was on my own to find replacement lodging. It took me nearly a year to get my prepaid nights refunded after taking the problem to the credit card company that had guaranteed my stay. Some guarantee.