why? just cause you don't like it ?

Most Premier league clubs, if not all, ban it. It's a good idea IMO. Hopefully will reduce the number of idiots deciding to cause a scene because they've had a few.

In case I don't like what? Beer? Or drinking at my seat?

Have you been to Ull in the past few seasons, their ground regs were the same about drinking at seat because their licence didn't cover it. The same is the explanation at Old Trafford.

It's part of the FA Rules, again, IIRC.

I remember being allowed to drink in my seat in previous years.

Thats because it doesnt have anything to do with the FA. The rules are made by the RFL and the police, they stopped drinking at seats after trouble a few years back.

I was with a group of 15 last year and we were allowed to take drinks to our seat.
however my brother in the west stand had his confiscated by a steward.

We are NOT football fans and most people are not idiots.

soz, was supposed to quote the one above your post. just done 12 hour shift. dopy at min

Different rules for those classed not to be idiots like the rest of us?

Part of law mate, Football Spectators Act 1989.

Appreciate that BG but its not Football as defined by the act which says:

"An Act to control the admission of spectators at designated football matches in England and Wales........"

I've also done an adobe word search for "alcohol" in the pdf version of the Act and there is no reference to no alcohol at your seat. Are you making this up?