Just off the Equinox 9/2/23. Our experience mirrors the others. 1 head butler, 3 retreat concierges and 1 retreat host (cabin attendant).
First thing we were advised by, I believe our cabin attendant, aka retreat host, was that "the butler was taken away". He said that it would be a team, etc. Well, first request we made was declined. All we wanted was a cocktail in our cabin for sail away. We were told by the head butler that drinks were part of the butler removal. They could deliver food but not drinks.
The 3 retreat concierges work in the lounge. We didn't need to call often but you couldn't always get through. Once it took 3 tries. The calls would get rerouted to room service. When you could get them, they were VERY friendly and efficient. But, they are stretched WAY too thin.
Cabin attendant did a great job, he was always nearby if we needed anything but didn't do anything over and above as a butler would do. He has 14 cabins to take care of. I don't know how Celebrity thinks that someone who has to tend to 14 cabins has time for anything else. When we ordered room service, it was brought by room service, not anyone from retreat.
Mini bar was a no-no. He did empty it for us but we had to lug waters from the lounge to the fridge. Hint-take a tote bag and load up!
Staff in Luminae were fantastic. Also, even though this ship is older and doesn't have a pool or bar on the retreat deck there were servers constantly coming around to see if you needed anything and had a light lunch menu that they would deliver to you.
This was our first Celebrity cruise in a long time and our first retreat experience. We typically sail in MSC Yacht club. This was our experience YMMV.