Scott,
Thanks for asking your question to planDisney!
I know that sometimes the myriad of ticket choices can be confusing, but I am here to help. So if I read your question correctly, you want to visit
EPCOT on one day and
Disney's Animal Kingdom Theme Park on another? Even if I have not read it exactly right, the steps below should walk you through what you need to do. The answer is as easy as A-B-C, or in this case 1-2-3!
Step 1: How many days will you go to the theme parks? Start by knowing how many days you plan on spending in a theme park when you go to the
theme park tickets page. The
Standard Theme Park Ticket will let you go into one park per day, for whatever number of days that you plan to go to parks. You can buy from 1 up to 10 days of park access. At which parks will this ticket work? You can use it at the
Magic Kingdom Park, EPCOT,
Disney's Hollywood Studios, and Disney's Animal Kingdom Theme Park. You could use every one of your park ticket days at one singular park, or spread your days out across the four parks in whatever mix best suits your travel plans. The choice is yours. But this base ticket gets you into one park per day, and only one.
Step 2: Do you want to park hop? If you want to hit more than one park in a given day, you can do that, but you do need to add the
Park Hopper option. With this option, starting at 2 pm, you can go from the park where you started your day to any of the other parks, as long as the next park's capacity limitation allows. I list this as step 2, because you will want to purchase this option when you are purchasing that base ticket. There are other options available, but we can leave those for another conversation.
Step 3: Reserve Your Park! For the days where you plan to visit a park, you do have to have a
Park Reservation for that specific park, and you secure that after making your park ticket purchase. This is simply your way of locking down what park you are visiting for a given day, and it is required. Typically I have never had a problem securing my reservations for a park, though some parks can fill up at busier times. Nevertheless you should make those reservations as soon as you know where you are going, and when. I did check for you and based on your arrival day, and for several days after, all four parks are available (as of the time of this answer).
BOTTOM LINE
Based on how I read your question, you would want to buy a 2-day standard ticket, and make those park reservations when you know the exact dates you will be in parks. It does not sound like you plan on Park Hopping, so no reason to spend the money for that option.
Those are the quick steps on how to select your park tickets for your trip. If you have more questions please write me back and I can help out further.
Have a Magical Vacation!
Doug