we werent allowed to stand, but the stewards didnt enforce it...in fact, a lad who sat/stood about 2 rows in front of me took his lass to a game....steward walked past her and actually told her to stand as everyone else was, she stood, and then sat down again when he passed....then on his way back down told her to stand again. Bit wrong but no one complained.
Even the stewards in the SE corner dont seem arsed, my first game in my new seat (arsenal) .... I went the wrong way after half time, asked the steward the quickest way to get back to my seat and he said 'just stand there' whilst pointing to the back of the stairs where there was about 15 people standing.
Of course it's right that people respect others around them and sit down if standing is causing any problems, just seems a bit wrong they're kicking up a fuss when their own employees aren't even enforcing their rules.