We're going to Manor Park at hunstanton (http://www.park-resorts.com/) for Monday & Tuesday £8.50 per night EHU, free entertainment in club house, free wifi etc. Will tell you if it's any good when we come home if it helps?
We will be returning from the cook fest, you could try that if you are looking for something to do at the weekend.
We stayed at Woodhill park at the begining to summer, not bad as sites go, good bus servive into sherringham and cromer and 20 mins on the train to Norwich. http://www.woodhill-park.com/
I am sure that you could ge a deal now the schools are open again