Flying into Newcastle on 22nd of Sept. Wedding in Hartlepool on 24th. Daughter and husband arriving on 23rd leaving on evening of 27th. There will be six of us from Sunday to Tuesday doing some sightseeing. Recommendations on where to go would be helpful. Also, should we rent a car/van or take trains everywhere. Which would be more cost effective. My husband and I leave to come home on the 30th. So from Tuesday to Friday there will be four of us again. More suggestions would be helpful. We feel we can do all the planning hotels, places to go etc. once we are there. Is that doable?