The bonuses work like in the attachement.
Until 2025 you could earn up to 360,000 milestone bonus points per year.
From 2026 you will limited to 210,000.
It's not clear if the Confirmable Upgrade Reward will be awarded to all members who have 120 nights in a year, or only Diamond Reserve members.
The website says "another CUR" at 120 nights, which implies it's for Diamond Reserve members only, but I suspect this is sloppy language.

Comparison of milestone bonus points earned under 2025 and 2026 rules.