There is so much to explore in the little towns scattered around Mt Etna! Do not limit yourself to a visit up the volcano but also plan time to wander around the villages :)
We got ok time but really nothing to rave about and nothing was simple. Food and cooking and buying at market is the best and so cheap and good
Catania is a beautiful place to visit, there are so many things to see but everything can be seen in a day or two.
We went in December and 2days was more than enough to see everything whilst relaxing as well
Catania is an interesting city and is a great place from which you can also visit Taormina and Siracusa.