Bathroom floors naturally get wet however hard you try - laminate floors generally do not like to be wetted too often - if it were my bathroom laminate would be the last thing I would use - but I know nothing.
In our bathroom we had a professional fitter lay a sheet of bubble-rubber type flooring - raised circles 1mm high and about the size of 10p pieces all over. He sealed all the edges to stop water getting under. It gets vacuumed and mopped once a week. Towelling bath mats on the floor make life more comfy and much less slippery.
The floor will always get wet - you will be best off with a continuous sheet of something waterproof sealed at the edges.
Good luck...
Peccavi's friend, August 2010