We were there two weeks ago. I debated over which fast-pass to pickup, Soarin' or Mission:Space. This is what we did, on Thurs. 6/15.
We arrived at Epcot before the gates opened(8:30, non-EMH). When they allowed guests in at 9:00 we went to the right and waited at the ropes for Soarin'. Soarin' was posted as a 10 minute stand-by wait, so we waited and rode Soarin' without getting Fast Passes.
Then we crossed over FW to ride Mission:Space and/or Test Track at 9:30. I sent DD to TT and DH to MS to check stand-by/Fast Pass times. Both were 20 minutes Stand-by so we picked MS, figuring it was the perfect opportunity with such a little wait time. We all rode MS Green (less intense) and when we were done DH, DD and my friend's DD rode Orange (original version).
TT was now posted with a 30 minute stand-by wait. Rather than stand in line (even though we were willing to wait up to 40 minutes at other attractions) we decided to get FP and went to Electric Umbrella for a snack and drinks (we hadn't had breakfast that morning), and rode Spaceship Earth and Universe of Energy during our wait. We returned to TT a little after 1:00.