I have discovered something while riding Soarin’. There are 11 seats in row 1, 10 in row 2, and 7 in row 3. If you are a party of 6-7, you are virtually guaranteed to get row 3. It has happened for us both times, even though that was not the next row available.
Thankfully it doesn’t bother me too much. 
But I’m riding Rider Swap with DSIL and DS and we were assigned row 1, albeit C1, but toward the middle at least.