Thanks for the responses! As this is our first time sailing NCL, and my in-laws first cruise ever, we aren't Latitude members so we'll only be able to book BTS (...which were completely fine with. My father in law who is an engineer dreams of seeing the engine room.)
Sailing to Alaska on the Encore on 9/3. We are very interested in the behind the scenes tour and are wondering how to book it. The app shows that it is not available to book. First time sailing NCL. Thanks!