Hi, Erica!
Even if your trip to Walt Disney World is 2 years away, you are going to love it...and waiting the 2 years to enjoy the
Disney Platinum Plan will be soooo worth it!
Take a closer look at the PDF linked above, you'll see that many Signature Dining Restaurants and Dinner Shows which use 2 Table-Service entitlements on other plans only use 1 entitlement on the Disney Platinum Dining Plan. Your 3 meals a day can come from any category, with the few additional charges listed in this PDF on pages such as 4 and 5 (gratuities and upgrades to the Chef's Table VIctoria & Albert's at Disney's Grand Floridian Resort & Spa, for example.)
In order to make many of these reservations, however, you will need to have a credit card. Your account will only be charged if you do not show up for your reservation and did not cancel at least 24 hours in advance. No charges will be made on that card at the time of your booking. This is simply Walt Disney World's way of making sure that Guest who change their plans cancel unneeded reservations, enabling other Guests to enjoy a meal at that time instead. It's a win-win. :-)
Enjoy planning your stay! Be sure to send more questions as you think of them, too. I'd love to help!