Found these terms on the HAL website.
Specialty dining is based on cruise duration and ship type. For 6–9-day voyages, guests will receive one night at Pinnacle Grill or Tamarind. For ships without Tamarind, guests will receive one night at Pinnacle Grill or Canaletto. For 10–20-day voyages, guests will receive two nights: one night at Pinnacle Grill and one night at Tamarind. For ships without Tamarind, guests will receive two nights: one night at Pinnacle Grill and one night at Canaletto. For 21+ day voyages (excluding Grands), guests will receive three nights: one night at Pinnacle Grill, one night at Tamarind and one night at Canaletto. For ships without Tamarind, guests will receive three nights: two nights at Pinnacle Grill, one night at Canaletto. Offer excludes Specialty Dining Events in the Pinnacle Grill such as Sel De Mer, De Librije and Sommelier Dinner. Reservations and dining times will be available to pre-reserve.