You are hilarious. - seriously.
I didn’t do the tour on Carnival but on Royal I got to keep my phone - took pictures of everything. Went into the bridge, captain came in, took pictures with his cap on while sitting in the captains big chair, walked I-95, went into medical, freezers, refrigerators, kitchen, engine room, garbage area. Don’t recall the entertainment areas, brig and didn’t get any food.
I guess it all depends on their mood.