I have visited Norwich on a couple of occasions for instrument refreshers and overnights. ATC and ground staff were helpful. Not overly expensive for a regional airfield, and as nicnak says, you can ask for a discount.
The AOPA aircrew card is a useful, credit card sized, photo id. I always keep it in my wallet, have to be particularly stupid to find myself the wrong side of security with no id. (Also good for discounts at hotels etc).