I have worked for this company for 12 years in 2 different parts of the USA. One in Washington state and now here in Kentucky. I can say iv never seen anything sprayed or coated the inside the bottle.
Also I have watched and had my hands into the making of a PET bottle. from when the PET gets delivered either in boxes,bags, or in railcars. To which I unloaded into silos to making a preform then blow molding the bottle.
I help collage girl's make bad decisions..... I make liquor bottles as a career.
I'll have to check my local liquor store but I'm sure I saw 190 proof grain alcohol in a plastic bottle. Thanks now I'm going to have to stop buy they liquor store and check this out!