I'm a solo cruiser who likes to dine at a shared table every night around 7 or 7:30. On my last cruise, this didn't work at all. I was told I have to dine earlier to have a chance to be seated at a shared table. One evening, since I didn't want to dine alone, I ended up having a hot dog for dinner up on deck. Very disappointing.
I believe I'll have to go back to Cunard if I don't want to eat at 5 or 6 and don't want to dine alone.
Sure wish Princess would change this policy.