A few suggestions of where to stay - there are plenty of BnBs, Airbnbs, cottages, and hotels nearby - places like Cley, Blakeney and Holt are lovely.
This is right next to the wedding ceremony and a 15 minute walk from the reception venue - the best bet for those without a car!
This is where we are actually getting married - 15 minute walk from the reception venue also
This is a 20 minute walk from the reception
Self proclaimed 'posh BnB' in Holt - really sweet rooms! You will need to book a cab to get back to Holt (~10 min drive)
Right on the seafront in Blakeney and ~5 min taxi from the reception