Hello, Emilia,
Please don't ever think you are asking too many questions; we love getting to talk about all things Disney and help guests. It is really an honor for us to have you ask questions!
I called
Disney's Port Orleans Resort - Riverside on your behalf and spoke to a cast member who shared with me that the refrigerators are essentially the size of an average dorm fridge, so anywhere from 2 feet to 3 feet high.
While visiting Sanaa at Disney's Animal Kingdom Lodge, you are welcome to walk about the resort as well as the savanna at both
Kidani Village (where Sanaa is located) and
Jambo House. Jambo House does have a larger lobby and more areas to explore within the resort and a larger savanna area to look at the animals. If you click on the links to the resorts, there are maps of each of them that should help you to visualize the savannas of each one. Also, there is complimentary transportation between the two resorts.
Wishing you a magical trip; please let us know if we can help again!
-Kara