Here's a couple different things I did.
At MGM - was at the park for opening, went immediatly to get a FP for ToT, had a return time of 9:40, (it was 9:00 then,) since it was just park opening, the standby line was only like 5 minutes, so I rode it, then Rockin' Roller Coaster, (also standby, 15 minute wait,) went back to ToT, used my FP. So I rode Rockin Roller Coaster once, and ToT twice, in less then an hour. I was then able to get another FP.
At MK - same thing I did at MGM, except one morning I did it with Space Mountain and Buzz Lightyear, and a different morning I did it with Splash Mountain and Thunder Mt. Railroad. A thrid morning I got a FP for Winnie the Pooh, and then saw Phillarmagic and Snow White's Adventures with no wait before my FP time.
At Epcot - One morning, at Park opening, I went and got a FP for Soarin, rode it with stand-by with like a ten minute wait, by that time, I still had about fifteen minutes until my FP time, but standby was already very full, so went to Sunshine Seasons, then used my FP. Soarin is the only ride in Future World that I used FP for, and when I wanted to ride Test Track, I just used the singles line.