Hi Steve and welcome to the forums.
Really need to try and pin down what you are asking for advice on.
Have you been offered those weeks at a sales presentation, have you been given them by a relative, you mention points (being Lanzarote I am assuming you are perhaps refering to one of the Diamond Club Resort (Resort Solutions not Diamond Resorts International) and therefore looking at options on RCI points.
Let me know or drop me a private message then I will gladly talk over the various options/schemes/types with you. If you then want to post your thoughts afterwars on here, no problems with me. I just don't want to be seen as "advertising" on here seeing as I do work for one of Europes largest resale companies (fully legit and trust worthy company as per most people's opinions on here I hope