I did a 90m2 floor using Kerrakol pourable flowtex adhesive with the Raimondi latch & wedge system on 1200x1200 porcelain tiles. They were a god send for that size format tile.
I will confess I bought a pack of wedges and yes absolutely essential part of my kit now I will say it won't make your work any better but they do make things easier and quicker no more cardboard for me but lash clips seems a bit expensive to Fair
