The food was pretty poor when I joined the RAF but generally very good by the time I left (late 80s). I was once confronted by a Flt Sgt cook asking why I'd left food on my plate. He was genuinely concerned that something was wrong and wanted to know how to improve it.
Never had the same experience when I had to eat at Army or Naval bases though.
I do remember a toilet at one place where written on the trap wall was "Please flush twice - the mess is a long way from here"...