I'd like to say that seeing it at night was our master plan all along, but we did it entirely because Mark and I goofed up. We had no idea that tickets for the daytime visits sold out weeks ahead, and when I went online to check them few days ago while in Barcelona, I had a mini panic attack when I learned they were all sold out for tomorrow -- our main day in Granada. I could get tickets to see the Generalife Gardens during the day, but not the Alhambra.
Our handy-dandy Rick Steves guide (if you don't know him, he's the BEST guide-book writer for Americans traveling in Europe) had a section for clueless tourists like us who don't reserve their tickets in advance. He alerted us to the fact that there's a nighttime tour of the Alhambra palace starting at 10 PM. A bit late, but the kids were up for it. We ended up having a lovely time wandering through the nighttime palace And we get to see the gardens tomorrow in the light of day. Saved by Rick yet again!