Our trip to WDW will be with my parents and my 3 younger siblings, so 10 of us in all. There is 5 in our family and 5 in my parent's family. As I contemplate our dining because the 180 mark to make our ressies is coming up in about a week, I am getting a little bit stressed. We will eat together quite a bit, but there will also be times when it will be just us. Only problem is, at this point I'm not sure when and where we'll be eating just our family of five. When I make our dining ADR's, can I book them all for 10, and then later on as I know for sure that a particular reservation will be for just our family of 5, will I be able to edit my reservation with the number of people? Can I do that online, or would I have to call in? Would I have to make a whole new reservation? I'd love some advice. Thanks!