I'm not sure I follow exactly what your question is, but here are some thoughts from a dad who regularly does 2 week vacations that include land and sea with a wife and 3 kids (now 15, 13, and 9).
We have a large assortment of luggage, which includes a number of very large pieces. We take at least one of those per person, then sometimes have additional luggage to check beyond that. Last year, we had to purchase more luggage while on vacation, which we will try to avoid this year. We usually pack each child's clothes separately. Often, hanging clothes go with my stuff in my big suitcase. We spread other gear (snorkels, sunscreen, etc) wherever it can go. We have one large bathroom bag that holds most of that gear, then one bathroom bag for sunscreen, then 1/2 for my daughter's hair care products. I roll items and use packing cubes for space.
We typically don't plan on doing laundry, so we have one shorts/t-shirt outfit per person per day. We do 2 nights per set of PJs. For dinner attire on the cruise, we try to limit the number of pairs of pants/shorts for the men/boys to 2-3, each of which goes with multiple shirts. My DD loves to take dresses to wear to dinner, so my wife and DD have lots of dresses, which is tough on space. We try to minimize the shoes, but the boys usually have sneakers + flip flops + crocs; I have sneaks + 2x flip flops + brown dress shoes (formal night and Palo). I don't bother with a suit to save the space. The girls have more pairs of shoes, but we try to keep it low. We take 3-4 swimsuits per person because we mostly do water excursions. The kids get one light zip-up sweatshirt jacket each, which they carry in their backpacks, then my wife takes 2-3 cardigans because they all get cold. We vacation in August, so it's never cold enough for me to need additional long sleeve gear, even in super AC restaurants.
We fly United, where I usually have status, so we get 2 checked bags per person at up to 70 pounds. Our bags typically come in at 60ish pounds each. Last year, I did not have status at the time of our trip, so we used carry-on bags to pull enough weight to get us close enough to 50 that the airlines wouldn't charge us extra. I spent 30 minutes at the check-in desk of the Grand Floridian shuffling gear last year to make it work, even with paying for 7 checked bags.
Overall, I'd say try to minimize what you need for cruise dinners by having items that can be worn again; think hard about any last minute items you might throw in; and consider whether doing laundry is a possibility. I always end up doing multiple loads (due to stains), but haven't ever packed on the assumption that I would do lots of laundry. Be wary of bulky souvenirs.
Hope that helps and enjoy the trip.