We will be in Almeria by ship for one day.
Want to take a tour of Alhambra. We arrive at
7am and need to be back to ship by 4:30pm.
Any ideas will be appreciated.
Thanks

Not really. We went by bus to Granada and stayed overnight - I'm not sure you could do there and back in a day other than by Taxi. The Alcazaba at Almeria is worth seeing, though, if you don't get to the Alhambra.

The only way that you could feasibly do this is by renting a car (unless the ship charters a bus). The trip is two hours each way (barring traffic and getting lost once you get to the city). I don't think it's worth it given the short amount of time that you have.