If you make duplicate ADR's for different numbers in your party for the same place at the same time on purpose, will the system or a person at Disney cancel one or both of your ADR's just because you did it or is it up to you to decide which one you want and cancel the other when you are ready? I'm asking because we are 100% sure that our family of 5 is going, but we have invited some extended family as well. We may need 1 or possibly 2 more seats at our table, but those 2 people (FIL and a SIL) haven't decided yet. I made our ADR's yesterday and we've told them about the whole dining issue. If only 1 of them comes, I don't want them to be high and dry and eating alone if they can't be accomodated on our ADR's. We are eating at some popular places, so I don't want to risk losing my ADR's if I go in and do duplicates with 1 or 2 more people in the party in case they are coming. They would probably decide in the next month or so, therefore it's not like I'm waiting until a few weeks out to cancel the ADR's that aren't needed. I don't need anyone to lecture me about stealing someone else's ADR by double booking and the morality of it. I just want to know if anything will be done by Disney to my ADR's if I do so. I'm mainly concerned about having an old man (FIL) eating alone while the rest of his family is enjoying a nice meal together. I promise I won't keep the dups for longer than necessary.