Sure, sneaking booze into places is frowned upon, but people do it, and do it often. We’re living in different times. The old flask in the boot doesn’t work as well as it used to. You need something more. Something they would never see coming.
A fake baby.
Nobody is going to be touching your baby if you say that thing is sleeping. People are afraid of babies. You’ll be strolling right through security with a doll filled with whiskey, kissing its head (drinking the whiskey), and nobody will have a clue.
“Aw, what a great parent” they’ll be thinking as you get blind drunk through a doll’s head.