We are planning our 3rd trip to Disney next month. We have not used the dining plan before. We tried to book thru Disney but could not find any availability during the time that we could go. Fortunately we did find something thru another source at a Disney resort (Port Orleans). Since we aere unable to purchase a pkg, can we still do the dining plan? We planned to get our park tickets at the resort (this is how we did it last time we went), and it was my understanding that the dining could just be an add on at that time? Thanks for any help...