We have selected personal choise dining, have read somewhere that although we have a choise of dining where and when we like we might have to share tables with others, do not mind this when we want to be sociable but would hope that if we want to spend a quite romantic night on our own at the dinner table this will be an option.
We were on the Grand last December. We saw quite a few couples seated alone. You may have to wait a few minutes if you don't want to share, but there's a bar and seating right outside the dining room doors and they will give you a pager.
You also might consider having a romantic dinner in your cabin or on your balcony (if you have one).
Have a great cruise!
"A truly happy person is one who can enjoy the scenery on a detour."