Just be aware that in many cases, the tables are VERY close together and might as well be so. Our table in Royal whichever it is on the Dream was so close to the one next to us, the servers could not get between them and the father at the table next to ours decided we all needed to talk and bond.
The dining rooms were designed for the traditional cruise model of shared tables, and they only have so much floor space where the tables can go. The more people who are demanding (it's a request when you put it in and deal with whatever happens - it's a demand when you pitch a fit and insist you get what you had requested IMHO) their own tables, the less and less extra space there is, and bottom line is in order for the servers to have a chance at doing their jobs, the tables ARE going to be close together.