I went with the Wife to the match last time - we went for a break down the Amalfi Coast, Sorrento, Capri & Positano for a few days beforehand, and then went to Naples on the day, and met up with another City couple, went to the port meeting point, and were bussed in/out the ground. Sorrento is a great (safer) place for beers before, and you can get the train into Naples quite easily...
The ground was an experience - not for the faint hearted. You will be watching behind netting, as there are loads of fire crackers going off in the lead up time... coming out - we were bussed back, and went around the same autostrada a few times... and then left at the Port by the Police - you have to find your own way back to your Hotel - we came across a group of lads with bandanas over there faces down one street, and we quickly walked the other way....
If you're looking for trouble, it will find you, if you don't want trouble, it's just common sense to avoid it...
I mentioned to the wife that we were playing Napoli again, and s jokingly said would she like another trip down the Amalfi Coast, and she said 'Yes'.... hmmm, don't think so... I've done the Stadium once, and in these conditions, I think once was enough.... it WAS an amazing experience though, and I'm glad I did it...
Agree with this, and Naples is a unique city, nowhere near as 'bad' as people make out if you keep your wits about you. Didn't a City lad get stabbed last time though?