We have done this more than once but we upgrade to the "Club" floor which includes
evening happy hour drinks with hot and cold hors d'oeuvres. This is all we need at the end of our travel day. If I remember correctly, in the morning the "Club" has what I'd call a deluxe continental breakfast: coffee/teas juices, eggs, (hard boiled or scrambled), bacon and sausage, bagels, toast (golly, that's enough).
The use of the word "assistance" for luggage is an understatement. You just leave your check bags (with HAL tags on them) in your room when you check out (or head to breakfast). You won't see them again until you enter your cabin on the ship. Do make sure you have all your documents and whatever else you need for boarding in the bag you carry with you. You WILL feel quite spoiled. Safe travels!