While on Navigator of the Seas, I was able to chat with several theatre techs just briefly.  (As you may recall, Royal Caribbean won’t allow anyone to “officially” interview their staff.  NCL is the only cruise line I’ve found so far that is willing to support this.)
 
I met 4 technicians.  Two of whom were working the shows in Studio B, which is the ice rink(!) on board ship, and two of whom were working in the main theatre.

 
Danilo – Royal Theatre lighting tech - from Montenegro.
Willington – Royal Theatre sound tech - from South Africa. That’s the back of his head there in the photo!
Syd – Studio B sound tech – from The Philippines.
And the Studio B light tech – unfortunately I didn’t catch his name nor where he was from.

​Ahoy there!
 
I just returned from a cruise on Royal Caribbean’s Navigator of the Seas!
 
The Navigator of the Seas has two main venues, the main theatre, called the Royal Theatre, and Studio B, which is an ice skating rink!  On this trip the Royal Theatre had two revue-type shows; “Showgirl!” and “Ballroom Fever”.  Both of which were very enjoyable, well performed, and technically state-of-the-art, but certainly the lack of a full-length musical production was felt!  Studio B’s ice show was called “iSkate” – again professionally done, but essentially also a revue type show - performed on ice skates!