The jack-o-antern fest is cute! They choose new themes each year & have a bunch of artists decorate/carve thousands of pumpkins. I’d say it usually takes about 20-30 minutes to walk through. If you do go, make sure you go after the sun sets and try your best to go on a weekday, as it will be WAY less crowded.

For Newport, you could visit some of the mansions if that’s your thing. They are almost always a self-guided tour with the option of using headphones as a tour guide. The mansions are extremely beautiful.