The good thing is that you can wander around it in whatever order you like (there are different numbered sections) and at your own pace. Amongst other things you will come across the amphitheatre, which amazingly is the oldest surviving Roman amphitheatre, a number of houses and even a brothel!
We had very limited knowledge before we went, so we were excited to learn more and see it all in person. We were slightly disappointed by the lack of info around the site and felt we left not having learnt much. However, a quick google search later and I have learnt some pretty cool facts.. For example, it turns out that Mount Vesuvius is the only active volcano in mainland Europe and is also considered one of the most dangerous in the world. Little snippets of information would’ve made the experience a little more interesting!
Of course, I understand that this is a site of historical importance and not an ‘attraction’, however I did feel at some points that we were just walking around an old town rather than trying to immerse ourselves in this sad event. The fact that you can still see the victims frozen in time from this natural disaster was chilling but I would have liked to have learnt more about it.
Overall I think that is it worth a visit, especially since we got reduced entry for €5.50 each! However I do think maybe if you did more research beforehand or took a guided tour you would get a lot more out of the experience.