I have a ADR question. We have a trip planned for January. We already have all of our ADR's. The trip is for me, DH, DD, DS, MIL, and FIL. My MIL and FIL may not be able to come. My MIL just found out she has cancer, and is not sure how long the treatment will be. All of our ADR's are for 6. If we have to change from 6 to 4, is it going to be a huge issue? I don't want to change them right now. What if they can go? Any info would be greatly appreciated.