Thanks Hydroguy, I'm trying to prepare and do my research as much as possible before I go. Since I'll only have less than 2 days to cover both parks...
I used the single rider line for Splash in mid September. It was great. I got a card from the CM, went in through the exit, and was put on the next log that came through.
The Single Rider line is FANTASMIC (heehee) for Soarin'! I used it when I went in May and I even got to pass the Fastpass people. I got dirty looks too!