We've just bought our first caravan (Elddis Ashington GT) to see if we will like it. Being used we think some of the bits and pieces are missing. Its 4 berth with the side dinette bunk bed design, but there is no mattress for the top bunk. Is this normal? Any suggestions as to how or get one. We were thinking of getting a bit of foam cut. Anyone got any suggestions on a crash course in what you do with all the tanks and sockets. We are planning a trip in a couple of months. I'm sure we will be terribly unprepared.