I've scheduled 2 trips using Uber for traveling. The first time, I was charged DOUBLE what I was "expected" while booking due to a ridiculous number of additional tack on charges. The second time, I got a notification my driver was 4 minutes out 30 minutes BEFORE my scheduled pick up time, and then they CANCELLED and Uber couldn't find me another driver on that trip. I had to book ANOTHER Uber, and got incredibly lucky that I got a driver when I did. Don't send drivers way before my pickup.