Carnival may be starting to block this. On my Panorama cruise and my Firenze cruise recently, the iMessage texting no longer worked without a plan. It used to be so convenient.
The deli is not in the buffet area on the Firenze. It is on Deck 11 above the Lido pool area and called Il Mercato. They have fewer selections than the regular Carnival Deli but also serve Meatballs in a variety of Sauces
They are selling Balconies on deck 15 forward where the Observation lounge is now for my Alaska Cruise in August of 2025. Looks like they will indeed be reducing the Observation Lounge.
The Norwegian Encore dailies state "DRESS CODE: Resort casual (tank tops and baseball caps are not permitted) Shorts are allowed in all dining venues except Ocean Blue & Le Bistro after 5:00 PM. Shoes and shirts must me worn."