Hi Totalitarian
Depending on he thickness of the ply
eg 18mm then screws are fine
5.5mm then either electric staple gun with divergent staples or annualar(ring shank) nails at 150/200mm centres.
joints can be filled with Ardex Feather finish or F Balls Stopgap 500 micro
Hi Roister
Use a quick step incizo profile, these can accomodate the laminate to carpet/vinyl/laminate/skirtings/patio doors and can match most wood finishes!