Your KTTW will have your table # on it. From that the dining manager will know what type of set up it is for (the # of people). The first time we cruised the lady that checked us in knew that our table assignment was for one of the larger tables. However, this last time the elderly man that checked us in had no idea (or at least that's what he told us). The only way to know for sure and to get it corrected, if needed, is to go to the designated place (usually in Sessions around 2:30ish) and find out then. If you wait until dinner, you will be limited by what is "left". We had to switch ours on our 1st cruise because we travelled with another family, yet they placed us at separate tables. We had it corrected immediately, but were told by the manager the later you wait to make a change, the more difficult it is to do. This last time our family of 5 shared a table with a family of 3 - this was a common setup at other tables as well. Families of 4 or 6 were most likely to have their own table.