No, I have plus and they don't show up. I always print out a copy of my travel summary and with the rest of the stuff on there, it will show you have plus.
I cruise next month. Travel summary hasn't been updated but the app says I have the premier package, which I do not. In fact all of mine say premier but except for one cruise, we've booked the Plus. Hmmm.
Go to your cruise on the website. Click on Onboard packages. At the top will be a banner about upgrading. Click on that and page down and it will tell you which one is purchased.
the Plus package used to be given out quite a bit 6-9 months ago. lately, the vast majority of casino players are given a cabin and free play. I have a cruise in September when I was given the plus package but haven't had that offer since. You can add either package after booking the cruise.