It was worth it. The only thing I did not like was bus stop to and from Pompeii. There were about 20 buses at that time and line to the bathroom was very, very long and didn't have enough time to stand in other line to buy coffee.
Pompeii is a must and climb to the volcano was fun.
We have wonderful guide, it was very, very good. I wish wasn't raining that day. But even with rain this tour was good. Would recommend to everybody.