Just finished sailing on equinox then silhouette and then Edge. I signed the go green email. I can confirm that our cabin was fully cleaned throughout once each day in the morning. In the evening , the attendant again serviced the room by emptying the garbage, replacing towels if on the floor, closed curtains, placed the daily on the bed and chocolates on the pillow. I asked him about the new procedures, and he explained that since I/we opted for the go green service, the only thing he did not do in the evening was a second complete cleaning of the cabin. So yes it is being implemented on Celebrity as well