Hello Donna and welcome to the Disney Parks Moms Panel!
My recent pricing of rooms and packages at Disney's Art of Animation Resort had all of the different areas of the Resort costing the same price. It is possible that supply and demand could dictate different prices on some occasions depending on the time of the year. Also, the Finding Nemo Family Suites are the closest to the fabulous "The Big Blue Pool," which is the largest Resort pool in all of Walt Disney World!
As far as adjoining rooms (next to each other without a connecting door), you can always request to have your rooms adjoining. However, you must have reserved the same section and it will be very helpful to have your reservations linked. In my opinion, the best way to accomplish this is by giving the friendly
Disney Hotel Reservation Cast Members a call. It isn't always possible to accomplish this, but I am sure the Cast Members will do their best to accommodate you.
I hope this helps with your planning. If you have more questions, come on back to the Disney Parks Moms Panel- we love to help!
See ya real soon,
Anne