Just sailed on the Destiny,never seen any tables for 2 in the Seven Seas restaurant, all seemed to be for 6 or .
If you have a suite you will get table for 2 if you find matre dee and ask to be seated in the old Galileo restauran.
No tables for 2 in the Seven Seas restaurant - all 6s or 8s.
In the Lido buffet all for 4 but unless you go when it is very busy you will get a table to yourselves.
There are tables for two in seven seas I have sat at them just ask when you get on board.