Hi Linda,
Thank you so much for visiting the Disney Parks Moms Panel with your question. I really like the resort that you have chosen for your next vacation.
Disney's Animal Kingdom Villas - Kidani Village is a great resort. I love being able to see exotic animals outside of nearly every window.
Currently, the design of the rapid fill mugs is the same for all Walt Disney World resorts. A new design was released last fall, so my guess is that the rapid fill mugs will likely have the same design when you return this upcoming July. These mugs are good for refills of drink station beverages, coffee, and tea for the length of your stay.
The unofficial site disneyfoodblog.com has great information on the rapid fill mugs. If you head to that site and search "refillable mugs," you will find lots of good information on the Walt Disney World rapid fill mug program.
I hope that this information is helpful for you, Linda. Have a great time planning your vacation, and please do not hesitate to ask if you have any further questions!