As a former "Love Boat" junkie, I can say with certainty that you should not expect anything similar! Things will be different, some better, some not. Cabins are a lot smaller unless you are going for the very expensive suites, you will rarely see the captain....he is busy making sure the ship gets where it should be, etc.
BUT, it is a great way to honeymoon. A walk on deck at night is about the most romantic moment you can ask for.
Enjoy! And, congratulations.