Hunstanton & Blakeney Point you may well see some seals, but gear up for a long walk or take an organised boat trip.
The area near Brasedon Marsh on the river Yare looks quite good for birds if thats your bag. Also, there's a lake near Thornham which looks quite good.
See more spots here: http://shothotspot.com/hotspots/?nelng=1.8246391717041206&nelat=53.0213372934822&swlat=52.522850388339045&swlng=0.1519707146728706&country=&types=4&months=&place=Cromer%2C+United+Kingdom&kw=#map
I think we may just do that, sure the missus will hate the idea lol - 5 months pregnant on a boat haha!![]()