In short, yes you can! I've called and got it from the horse's mouth -- as long as you book in advance, the four complimentary Atlantis wristbands are still available without the prior restrictions!
The five steps to free Atlantis Aquaventure admission:
https://deenondeck.com/2023/09/22/atlantis-aquaventure-water-park-for-free-the-comfort-suites-hack-for-2023-in-5-easy-steps/
Excerpt:
Regular One Day Adult Admission to Atlantis Aquaventure Waterpark, pp: $190 each
Admission for up to FOUR adults/children to Atlantis Aquaventure waterpark when you book a room at the Comfort Suites, Paradise Island: Free
Cost of a room at the Comfort Suites: $200-$300 OR (using Choice Reward Points): Free