Wow, that's a lot to go at! ;)
Firstly, this might be of some help:
http://maps.google.co.uk/maps?f=d&s...05935&sspn=0.012693,0.054932&ie=UTF8&t=h&z=14
If you're coming into Manchester from the airport or otherwise by train, you'll end up at Piccadily station. It's walkable, or black cab taxis are readily available if you need them. As you can see, you're in the City centre, and takeaways, hotels, pubs etc number in the hundreds, within walking distance. It's a provincial capital city, the centre is large and fairly cosmopolitan. Pubs near the ground tend to be for home support, though as I generally drive to games I can't say I've been in all that many of them, hopefully another poster will help.
Away fans get 6 blocks in the south stand, towards the south east corner, 3 blocks over the two tiers, for PL- UEFA rules may be different. You're well segregated from the home supporters, the most vocal of which is sitting/ standing either side of you. The south stand is at the far end from the club shop, and since it's quite hard to differentiate in the pics, it's the far end from the emergency tunnel, and as the players emerge from under the Colin Bell (west) stand you'll be off on the right hand side. There are two large video-wall type scoreboards in oppositie corners of the ground. Theres one above you to your right, as you sit in your seat, and the one in the far corner is big enough to see. Line ups are announced twice, half an hour then 5 minutes before kick off. Replays of goals and near-misses is usual. I don't think there's any 'cloak room' facility available, unfortunately.
I'd say the stewarding is fair minded and reasonable. You'll find City fans, and Mancunians in general, to be very hospitable and friendly. City do have a trouble causing element in the fan base, but not a large one. 'Problem' fans have generally long ago been identified and long since banned from the stadium and it's vicinty, but as you might imagine there's nothing stopping that sort of person from milling around in town. UEFA ban alcohol sales for matches in their competitions, in England if not elsewhere in Europe. Instant brownie points will be awarded to any German visitor asking anyone seen wearing a rag (scum) shirt to 'fuck off back to London' ;)
As regard cameras, I'm not sure what the guidance is. You won't have any trouble with a little compact or, of course, your camera-phone. Strictly speaking, I think photography is a no-no, but I think it'd be fair to say that it's never stopped anyone taking a few pics for throwing on facebook.
Cold hard cash will be fine, or even warm foldable cash, if required. ;) I think they trialled a smart card scheme- it might even still be in use- but I don't think any such facility exists for away fans. Food (and drink) is ridiculously overpriced but generally edible, but there again, going off what I read on here it seems to vary in quality depending on whereabouts you are in the ground.
Don't bother with Liverpool, it's full of orange fake tanned bleached blonde women with dodgy accents ;)
Hope this helps. Enjoy your visit, but not too much ;D