I need your input on my road trip with my 2 kids (10,4yrs). We'll be visiting Rhode Island region in between NYC and Boston. We've 1 and a 1/2 days for RI. Besides Providence and I suppose Newport for the Cliff Walk and mansions, what else is interesting around the region? Should I make Providence my base or is that too much doubling back? We like nature, local culture/food, local shops, kids' activities, actually, pretty much everything.