Hi Michelle,
Welcome Home! You are going to be staying at two of my favorite resorts - Boardwalk Villas and Beach Club Villas. These are both located within walking distance to Epcot and Disney's Hollywood Studios or a quick boat ride.
Because you have two separate reservations, you will receive two separate dining plans. You will receive an allotment of dining credits for the first reservation and then an allotment for the second reservation. You will not be able to carry any Disney dining plan credits over to the next reservation as they expire at 11:59 pm the day you check out.
You should be able to add them to your Key to the World. When you call Member Services at 800-800-9800 they can provide you with all the information you need.
Finally, when you go to check out of your first resort, you can call bell services to transfer your luggage to the new resort. Once your room is ready, simply ask the front desk at the new resort to have your luggage delivered to your room.
Wishing you a magical vacation!
Beth