We had wanted to visit Pompeii for many years. It was worth the wait. The scale of the site is amazing, so be prepared for a lot of walking. A few of our party found it a bit much as much of the walking is on uneven ground and not a lot of shelter.
Do take refreshments with you as once you are in the grounds there is nowhere to buy anything.
If you are using public transport - the train station is only a five minute walk to the site.
So glad we visited and would recommend