When we went in January we actually did both. My 2 younger kids were almost 4, and 5 1/2, and they loved it! They don't really watch Little Einsteins too much, and I can't remember who the other characters were. We did breakfast at 8:15 or 8:30, before the park opened at 9:00, and then had a 1:45 ADR for Sci Fi, in which we got out at just the right time to walk over and catch the parade.
Play and Dine: The 2 younger ones loved it, and loved dancing. My almost 9 year old didn't really get into it, but he is much more reserved anyway. The food was good, pretty basic stuff, not too crowded early which was really nice. I'm a breakfast person, so this was good for me.
Sci Fi -- DH and I ate here years ago before kids, so it was a sentimental favorite. The kids loved eating in the car, and the atmosphere. Burgers and hot dogs were good, loved the ice cream sundaes. I thought that it was a great place to be to relax, and was actually very quiet inside, which was unusual. We actually had a 2:45 ADR, but changed it so that we could see the parade.
Is there anyway you could do both? I know it sounds crazy, but it really wasn't bad. I guess for us, we also had an extra TS because we didn't use any on our arrival day.
(YEAH--200 posts!)