Sure, I don't mind. Mears costs, I believe, around $15 per person round trip.
Here's what happened on our last trip. So you have some idea about ages, my dad was around 50 and I was 22. We called the day before, as instructed to do by the Mears people and set up for them to pick my dad and I up at 8:30 am. Dad and I were sitting on a bench in the carport area outside the front doors of Coronado Springs at 8, waiting for the shuttle.
8:30 - no shuttle.
8:45 - no shuttle. Dad goes inside to call Mears and see what's going on. A CM at Guest Services makes the call for him and tells dad that Mears will send a shuttle by 9.
9 - still no shuttle. Dad goes back inside and the CM calls again. This goes on twice more before Disney finally works something out with Mears and puts us in a paid cab around 9:30.
Spend the day at IOA, fantastic, great fun. We call at noon and schedule our outgoing shuttle for 6:30 pm. Dad explains what happened earlier and the Mears people assure him that it was an anomoly and we'll have no trouble getting home.
6:00 - We're waiting at the designated shuttle spot, with a looooong line of other people. Shuttle bus never shows (noticing a pattern). Now, by this point, my dad has one of his famous raging migraines. Not fun in the Florida sun, I can assure you. I find a US employee and explain the situation. He calls Mears. Assures us a bus is coming for us. Sure enough, the bus shows up. People get in line and they start checking names and something else (can't remember what) and sending people away. Angry people. Dad and I get to the front of the line and the girl check on her clipboard and says we can't get on the bus, we have to wait for the 8:45 bus (It's 7:00 pm) at this point. I looked at her, looked at my dad, who was pretty much useless at this point and tell her that we are getting on the bus. She looked really startled and didn't say anything so Dad and I got on the bus. She never said anything to us, which is good, because I was ready to fight at this point. We did eventually get home to the hotel, but you can see why, if I can avoid Mears this time around, I'd like to.