Star Tours - Back Left Corner
Space Mountain - Back Row
Matterhorn Tomorrowland - Back
Matterhorn Fantasyland - Front
It's A Small World - Front
Roger Rabbit's Cartoon Spin - Front
Fantasyland Dark Ride - Front
Casey Jr. - Back
Big Thunder Mountain Railroad - Mostly Back
Pirates of the Caribbean - Front
Splash Mountain Hot - Front
Splash Mountain Cold - Back
Indiana Jones - Driver Seat or Back Right Corner
Soarin' Over California - Front
California Screamin' - Front or Back
Radiator Springs Racers - Front
All Dark Rides - Front
The drivers seat with the steering wheel on Indy is the best ... my friends like to pretend yell and blame me for when the car stalls lol .
When I was little (not quite my first trip on IJA, but the first time my family was seated in the front row and I was offered to sit in the driver's seat), I was convinced that the steering wheel actually did control the vehicle and was far too afraid to sit in the driver's seat--I made my dad take the wheel on that trip. It took a few more years for me to realize that cars were on a track and that the steering wheel was just for decoration.
Big Thunder Mountain is the only ride where I ask for the back row; all the rest (including Splash Mountain) I prefer to sit in the front. Let me tell you a little story of why.
A couple of years ago, before my front row seating preference, I went on Space Mountain and sat in the third row of the first car with my brother. As we got off the ride, he says something to me: "I didn't know they added water to Space Mountain."
I thought this was odd, since I certainly didn't feel any water, and I definitely didn't think there should be any on the ride. This grossed me out. It left no other explanation than someone in front of us either spit or vomited, and my brother was part of the casualty.
From that moment on, it was the front row or nothing.
Even Big Thunder? The front on big thunder is really bad.
Anyway yeah depends on the ride. I don't know what is with this back on splash so I stay dryer mentality. In the front you get a good spray and your head and torso gets wet. However in the front your shoes stay dry! It's way nicer to keep your shoes dry, so I prefer front on splash.
Oh and Indiana Jones always the front outside edge. Preferably the steering wheel seat.