My wife and I will be in Naples for the first time for one day on a cruise ship from 7 am to 7 pm. So far we were planning on doing Pompeii for sure, but after Pompeii would it be worth going down to Sorrento for lunch and walking around/relaxing? I was also considering going to Positano but it seems a bit far for one day. Any ideas? Another option is to do Vesuvius after Pompeii. Thanks in advance!