Next week going to see Radiohead in Manchester (IR>Pinkerton<Neil Young>Kid A etc etc) but not being quite quick enough at buying them stuck with only sitting tickets. We have assigned seats, but I have always always bought standing tickets (normally wouldn't bother if only sitting available, but will make an exception for this)

So my question is, is assigned seating actually honoured in gigs? Or is is only in theory and everyone will sit wherever? If the former we may queue up earlier...