Just sneak one in find your seat and enjoy a hot beverage is my advice it’s cold and you’ve turned up when we are in such a position I’d turn a blind eye if I was a steward
I know a couple of people who bring a flask, so they certainly don’t check in the Lower. Makes sense, as a throwable object filled with hot water is far less dangerous than a bottle cap.
This reminds me of the FA cup match at Stoke in 1966. It was freezing cold, with snow on the pitch, so my dad brought in a flask of tea generously laced with Scotch. Watching the lads win 2-0 got me, as an eight-year old hooked on the Saddlers. Sharing the tea caused a different dependency to develop
Just slip a flask down the front of your trousers…if a steward asks what the bulge is,just give him a wink and a knowing look,he won’t ask anymore questions…