Just wanted to share my experience on the restaurant/decor. We were there in December as well and came away disappointed.
Disney is supposedly top-tier, having gone "all-in" on projection systems, but this particular implementation left SO much to be desired. The projection of the earth out the "window" was way too low of a resolution, and was literally just a static picture. The clouds didn't even move (my screensaver from 2005 had dynamic clouds, sheesh), and there were no lighting changes, airplanes/contrails, or anything. There was also no moon, which should have been slowly transiting occasionally. The other thing that really bothered me is that we weren't rotating against the star field. It was static as well! The stars should have definitely been slowly moving and we should have been able to see recognizable constellations if they wanted to give even a modicum of realism to this effect, which they were obviously trying to do! Instead, it looks like they just wired in some crappy old pre-2000 fiber optic "stars" in random places on the wall. I don't know, maybe those were projected too, and if so, all the more reason they should have been moving and in a familiar configuration.
Finally, the graphics of the astronauts and ships outside the window were definitely on-par with video games from about 2012 or so. The quality, resolution, and frame rate of these graphical objects were also sub-par, and their rendering was frequently glitchy! It's Disney, and so we know they can do SO MUCH BETTER, and our expectations were high, going in.
The entrance/exit elevator was pretty cool, and done a lot better than the projection window. One more indication that they *can* do better, but just didn't or weren't able to for some reason.
The furniture in the restaurant was mostly bland and uninteresting, though there was some mildly interesting "space cutlery" that I haven't seen around before.
The food was okay but not memorable.
I unfortunately will not be going back, especially considering the high price.
(P.S. -- I also do not like the direction WDW has been taking in moving so many restaurants to a "pre fixe" menu now.)