There are a few types of laminate flooring. Laminated flooring shouldn't expand and contract like 3/4" solid flooring.
Some laminates are plastic. Others have multiple layers of cross-laminated sheets to actually PREVENT the shrinking and expansion. (This is one of their primary selling points.)
Sooooo, unless the Instructions explicitely say to allow 'some time' for the wood to become acclimated, there's no need to do so. At the same time, if it says to leave the plastic on during acclimation, then just do that.
I'm hoping the directions are 'clear' regarding acclimation or not (and stacking or not.) At worst, ctc. the Mfgr. for specific instructions. (If I knew the make, model, and serial #, I could tell you more.
My best to ya and hope this helps.
Jay J -Moderator
PS: Please, no need to post the make, model, and so on. By the time I see your follow-up, you could probably ctc. the Mfgr. yourself for an answer (assuming the Instructions aren't clear ...)