I think you guys will really enjoy Port Orleans Riverside. It's worth really taking the time to walk around and explore the beautiful grounds. That's what differentiates it from a lot of the other resorts, in my opinion.
I hope you find the time to walk through the beautifully landscaped Magnolia Bend and lush Alligator Bayou areas, walk along the river and through Ol Man Island, etc. - in the morning sunshine and also at night.
Most importantly, I think you'll really enjoy taking the Sassagoula River Cruise from POR to Disney Springs (you can even take it roundtrip if you don't want to visit Disney Springs). The ride is relaxing and beautiful - perhaps one of my favorite WDW experiences.
Check out this tour by Justin Scarred:
(his videos are super frenetic, but this nevertheless provides a really good overview of the grounds; note that he's staying in one of the Alligator Bayou rooms, and spends only a little time in a part of Magnolia Bend at the end).
Also check out this excellent, incredibly detailed Port Orleans fan site:
http://www.PortOrleans.org
As an additional note: personally, I'd recommend booking a "river view room" and calling the front desk 3 days in advance to request placement in the Magnolia Bend area (that's the mansions, as opposed to the lodges of Alligator Bayou). Stepping outside and overlooking that beautiful river in the morning is really special. (Some people disagree about booking specific views being worthwhile, since the moderates only have windows to the balcony walkway, but I personally found stepping out and seeing the river to be really special; I'd suggest at least a garden view if you don't want to spend the river view price. Some people also disagree about Magnolia Bend being superior to Alligator Bayou, but I've found that MB is the "safe" choice because pretty much everyone likes it, while people seem to have split opinions on AB.)
I hope you guys have a great visit! Let us all know how you enjoyed the resort!