Just wanted to put a post up that I have at last decided on a itinerary. I have had so much help from people on this forum, it has been great. We have eight days in Hanoi, within that time, three nights (including travelling on train) in Sapa, and .a two night cruise on Halong Bay. Then we fly to Danang and onto Hanoi for six nights. From there we go to HCM for two nights and then out to the Mekong Delta for two nights and then home. As advised on Tripadvisor, I have gone through Tonkin Travel. They have been great with emails flying back and forth. Maz1 on this forum has been extremely patient with my questions and has walked me through it all in a very patient way. Thank you to all. I promise to put a trip report on when I get back.