Dinner on the Navigator - Reservations?

Have cruised on Oceania and Azmara. Taking first Regent cruise in November. We enjoy company of our fellow cruisers but prefer to dine alone for dinner. We have our reservation at Prime 7 but wondered about dinner reservations at Sette Mare and/or The Grill. Are they available and how/when do we make them, or aren't they necessary. Thanks so much. Looking forward to our first Regent cruise.

It's my understanding that The Grill and Sette Mare don't take reservations.

Settle Mare does not take reservations...first come, first served. We usually had better luck going as soon as they open at 630pm or after 8pm. There is no 'grill' on the Navigator for dinner. Also no problem getting a table for 2 @ Compass Rose most times unless you try to go @ 7pm or right after the captain's welcome aboard event when everyone seems to head right to the dining room. Even if no 2-tops available, just go enjoy another cocktail and they will come to get you when your table is ready. Cheers!