So I just attended a CM + friends preview.
The QS wasn't open, sadly. Both rides were...
Alien is decent. However, they're going to have to refurb the floor practically every other night.. the smudges coupled with the blue floor doesn't lend itself as well to blending in as the brown does at Maters, I presume (which I've never experienced). Honestly, I wish it went a bit faster a la the tea cups, but families should be pleased enough.
Slinky was better than I was prepared for -- also slower -- nothing grand, but whimsical! If you can remember my standpoint, I just wasn't all that impressed with the idea of this land... especially with the budget cuts. However... I suppose it does its job, and it is very quaint. It's still quite a lot of land for what is there... which is a shame. But honestly, the theming is well enough to where it really underlines just how bad other areas in the park look.