I often bring friends to VP and watch a good many away games with them in the home end. Even get away with mild celebrations most of the time too. Was up at Anfield a couple of years ago when we won 3-1 with my wife's cousin in his corporate seats in the centenary stand and went quite mad when we scored and they were fine! It's all about being sensible and showing respect I think.
I would feel a bit dirty if the friend was a Manure fan I think.
As long as they shut up yes, I took my mate who is a liverpool fan to sit in with the home fans and we won and I made him sing and jumpred all over him when Taylor scored the winner
Looking at going to Blackburn with my 2 kids and sitting in their family stand, if they have one? Is this so wrong?