It's tough to get to Mt Etna. You can go with a tour or take the ONLY public bus that goes there each day. We had no luck booking the former and the latter was going to be tough. I eventually hooked up with a car for hire that took us to the visitor area. From there you can pay to go higher with a guide or take the skilift/cable car higher. We found plenty to challenge and interest us by hiking around some of the craters easily accessible by foot from the parking lot. "Easily" refers to the fact that there are no barriers to entry. The hiking is pretty challenging. The ground is loose volcanic pebbles and there is pretty good elevation involved. On our visit there was a significant wind as well. Having said all that, we were transfixed by the different craters and views we saw in just two hours. There is plenty to see just on foot. The tram and guides may be even better, but it's worth a visit even if you can't afford those amenities.
This review is the subjective opinion of a TravelPod member and not of TravelPod.com.