Mears is basic transportation that we used quite a few times in the pre-DME days. You will probably share your ride with one or two other groups and will probably make multiple stops unless you are all staying at the same hotel (which never happened on our trips). We once had a bad experience with them. Our driver was a very nice lady, but when we stopped at one of the airport terminals, she gave our bag to someone else who was getting off at that terminal. We did not notice until we were dropped off at our terminal. Luckily, she remembered what the guy looked like and was able to catch up with him to make the switch. All the bags in the van were black, but a quick check of the luggage tag would have prevented the problem.....and we did not blame that entirely on her. And she was very apologetic. Still, it was a stressful 20 minutes. Right around then we decided to check out using a towncar service and that was great. Now we basically stick with DME, sometimes renting a car at WDW for a few days.