Advice - Rome and Naples

[CrackedHeels2]

I'm looking for advice, suggestions and recommendations please. We have booked a one week holiday in July - 4 nights in Rome, 3 nights in Naples. Staying centrally in both places. We are me are my husband (late 40s), son aged 21.

We flying into Rome and out of Naples and are keen to visit "sights".

Any help is gratefully received. Can we pre-book anything? Is this advised?

Thanks

Avoid Sorrento - it's Brits abroad with Arsenal matches and wipe clean hamburger menus. Amalfi and Positano nicer.

Thanks again everyone, really helpful suggestions and advice.

Pompeii