Here's a heads-up- not sure if this is still operating or not but I'll post anyway. This was the day of the soft opening (Aug 15)- we got to Epcot early (9 or 9.15) and I headed straight for the single rider line for Mission Space (about a 25 min wait). DH went to get FP's for TT and when he put in his park pass, it gave him a surprise FP for Mission Space for straight away (up till 10am) in addition to the TT FP's.
I was already in the line so he couldn't tell me, so when I met up with him at 9.55 I could have ridden again (was feeling a little queasy and while I would have loved to, I knew it would finish me off). I stood at the entrance to MS and shouted "anyone want a 10am FP for MS". People looked at me like I was nuts, but some guy came and took it and was pretty happy.
We did babyswap at TT, and I spoke to the CM while waiting to ride. He said they would be giving the surprise FP's for a while, he wasn't sure how long, for anyone getting TT fp's first thing in the morning.
BTW- MS is the best attraction I've ever experienced IMO- I didn't feel nauseous during the ride, but for about 15mins later I was a bit wobbly- nothing a quiet seat and a cold drink of water didn't cure- I rode TT about 30 mins later and was fine.