I recieved this email yesterday and called RCL. Spoke to a very helpful operator Carla. There will be 11 of us traveling in June 2023, I requested that our gratuity be added to our total bill meaning we will be paying for it before we set sail at the rate of $14.50 per person per day and not being charged at the end of the cruise at $16.00. I believe u have to make this request before Sept (but not totally sure). We will still tip throughout our cruise to helpful staff.
Hope this was helpful.