Carnival has the least in regard to "suite" perks. Priority embarkation and debarkation are the only two real benefits. The suites themselves are nice and provide more room, a separate sitting/dressing area and a larger balcony.
Other cruise lines will provide: Concierge lounges, in cabin dining from the main dining room or from specialty restaurants, private disembarkation lounge, daily canapés, butler service, additional cruise credits....etc.
Carnival does fall short but the cabins are nice.
__________________ Cruisemates Community Leader/Moderator
"There is a great difference between being well traveled and just having been to many places." ~Me
Different cruise lines offer different amenities with their suites and mini-suites.
We've enjoyed suites on Celebrity, HAL and RCCI...our only big disappointment was in Celebrity's Mercury Sky suites..they were just soooooo small! We had Concierge service with afternoon tea and canapes, and they couldn't even get the cart in the door! BUT the service WAS super.