Here is what it says:
Current Housekeeping service consists of twice full daily cleaning and sanitization services; morning and evening.
The Go Green program provides a full daily cleaning and sanitation service.
The night touch service will provide a turndown of down of the bed, adjustment to room ambience, removal of garbage, and organization of guest items –making the stateroom and the bathroom neat with a personalized touch. "With Go Green, the guest will specify a preferred time for their housekeeping services."