I�m just back from a weekend trip. I used book2park in Raleigh, NC. I ended up at the Hilton Garden Inn. I registered my car at the hotel when I arrived for my trip. I waited less than 10 minutes for a shuttle to the airport, which was literally 5 minutes away. On the return trip, I called for the shuttle and was picked up within 10 minutes. I was dropped off right at my car! Overall, it was a great experience and I will definitely use them again!