Hi Jennifer,
Yes, you can make reservations at any of the wonderful restaurants at Disney. This includes the ones located inside the Parks or Resorts. Since you are well within your 180 day booking window, simply click
HERE to start making your Advanced Dining Reservations.
You'll need to make note of your various confirmation numbers for dining, as they don't send anything in the mail for those.
You can purchase your Walt Disney World Park tickets online
HERE. They will mail those to you, since you are not staying on property.
Have a wonderful vacation,
Kaylene