Will reviewers see acknowledgements in double blind peer review?
There is no reason that you need to put anything into the acknowledgements section until it is accepted and you are preparing the camera-ready version.  It is perhaps the only portion of a paper's text that can't really be affected by peer review (unless you do something remarkably unusual).  Furthermore, some acknowledgements must always be left our in order to maintain double-blind review: for example, funding should be acknowledged in the final document, but grant information breaks blinding.

Thus, I would recommend that you treat acknowledgements just like you treat author information: blank it for blind review, and add it in for the camera-ready after acceptance.