Very impressive article. Great info, and well written!
Two comments I have:
Gluten-free pizza , in my experience, and IMO, always sucks, unless it's cooked in an industrial oven such as Domino's. So that's a tough one, and Carnival is in the same boat as the rest of us there (oops).
Sandwiches, that's an easy fix. Simply utilize individual packets of mustard/mayo. Problem solved.
Thanks, larry mac