The Sensation has no specialty restaurants. Carnival usually has a comedy act on all their cruises. They often have an adults-only show late at night with the usual ribald topics and language.
The Sensation has undergone the full upgrades that the Fantasy-class ships have been doing, and it has the Waterworks pools and slides, plus the adult-only Serenity area.
Which category cabin do you have? The Sensation now has several categories with balconies. The original Fantasy design only had balconies for the suites.