Just got off the Ruby...First time cruiser...
Our room steward introduced himself when we first boarded and I let him know I needed distilled water for my CPAP machine.
We saw him many times a daily, most regularly in the morning. He told us that they know by our medallions whether a guest is in the room and check before entering as they cannot enter a cabin that is occupied.
Not exactly sure what "turn down service" is, but our rooms were tidied up (beds made, trash emptied, bathroom cleaned, towels refreshed, dishes removed) at least once a day. Our beds were made at least twice a day, morning and evening and some times three times a day. My 7 year old said that was one of his favorite part of the cruise! π
Our room steward also automatically put a paper Patter on the bed every night without us requesting.
One thing I found quite helpful as a first-time cruiser is "The Wake Show." It is on the tv in the room. The cruise director records a video for the next day that is available the afternoon prior. He goes over what to expect for the next day and any important instructions to look out for. It's 10-20 minutes, but the important part is in the first 5 minutes and then he interviews a crew member.