Of course there is. I've read spoilers on tons of other movies and if its something worth seeing, I've still enjoyed the experience. I read spoilers ages ago on Saw and when we borrowed the DVD, I still liked it. (On the flipside, it also helps me avoid gorey mutant rapey crap like The Hills Have Eyes while still sating my curiousity.)
From the read alone, Lady looks like it reaches at a lot of places and is making itself up as it goes in a bad way. I suspended all of my belief for the aliens being immune to water, I don't think I'm quite aboard for this weird mermaid from the pool with all of these wonky rules and all of the people she needs living in one apartment complex. No doubt M. Night does some good drama since that's something I've enjoyed in all of his movies so far, but I don't think it's something I'm gonna be spending my movie money on like all of his other films. I couldn't get my ass to the theater fast enough to see the Village. I'm just not feeling this one.
Local critic Larry Ratliff gave it two jalepenos (yes, how lovably ethnic, I know) and said the movie "lost" him (and I paraphrase) by having M. Night put himself in the movie. That is one thing about the movie I find myself doubting very much. Get a grip, Larry, surely that can't be right.