I have used them 5 times. I have never had a problem though in the past some people have reported problems during busy times. I have noticed that they are using cheaper model cars. I used to get a Nissan, last trip I got a Daewoo. The car looked fine and ran OK but it was just basic transportation. I will still use them because they are the cheapest onsite and I've never had to wait in line. Bring proof of insurance if you don't want to purchase extra coverage.