We will be visiting Granada in February 2016. There will be 4 of us and wondering if we should purchase tickets in advance. What is the best way to purchase tickets in advance?
Yes, it is the most popular tourist attraction in all of Spain not just with Am tourists. Get tickets online or through you hotel.
Probably no problem, but why take the chance? The recognised seller is http://www.ticketmaster.es/en/recintos/la-alhambra-de-granada/
I went there last winter without buying tickets in advance and there were plenty of tickets available. It was on a monday, so perhaps there were fewer people. But if at can save you the worry I would buy tickets in advance.