*I know this is not the ideal way to see Granada, but we have no other choice---we will be in Malaga and going on a one day excursion to Granada. It was difficult to find a tour that did this (other than shore excursions, and other private tours which we couldn't afford). Finally found this site. It may be helpful for anyone seeking a like trip. Hope this helps someone in a similar situation.
https://www.viajesrusadir.com/en/excursion/1/EX1/excursion-to-granada-1-day.htm
Looks like a good option from Malaga/Nerja if you only have a day, especially if it secures you Alhambra tickets. The time spent is generous enough to allow a good appreciation as well. Let us know how it goes. Enjoy.