Thai's First Class cabin is sublime. (Put that experience on your bucket list.)
But more often then not, its Business Class food and service tend to be supbar. (There needs to be a heightened standard guys, particularly given the exorbitant ticket cost.)
On this recent flight from Sri Lanka to Bangkok, the "fish" dish was totally inedible. [The potatoes and vegetables were dry and as bland as could be.] And the flight attendants didn't give a darn.