Porcelain adhesive advice

[Olz]

Keraflex gets my vote

Give your local tile giant a ring for great prices, tell them TF sent you...

Tile Giant

 

[Daz]

I would be using either Keraflex, P9 or Ardex X7G+ (my personal fav :lol🙂 for the walls. I always use a rapid set for floors, and as mentioned already why don't you dry lay first?

You will deffo need a flexible grout too.