With Oceania switching over to Simply More you can no longer opt out the package of items included.
Price and itinerary have not been comparable for the the cruises we've looked at. Recent example being South America/Antarctica. O came in at almost $3000 pp more. Both without air. Both included WiFi, beverage pkg., excursion credits. HAL price also included crew incentive and 3 specialty reservations. O specialties are always included. While we did enjoy Oceania very much, we didn't like it that much more!
BTW the HAL price was for 2025, O for 2024. It doesn't look like O is sailing there in 2025.