Holland America's website does a horrible job at, well, just about everything for the first time cruiser. Or, perhaps, I am just not adept at finding the info =)
Luggage for instance. I know we have two luggage tags for checked luggage. No brainer there.
However, what is the criteria on carry-on. I know I am taking a pack with my electronics, paperwork, meds, and a change of clothes.
HA allows you to bring your own wine, and there appears to be no limit on quantity, just on where you can enjoy it. Can I bring a little hand cart with a case? Two cases? My wife likes wine too =) Along with my pack?
Are you asking about carry-on's for HAL's cruise ship or an airline? We haven't run into any luggage limit on board a cruise ship...but remember in your cabin you'll need a place to store luggage, backpacks, etc. And unless you are in a suite there isn't a large amount of closet space or counter space. It's not skimpy...and HAL is one cruise line that has cabin sizes which are on the larger size...but you're still on a ship not in a hotel room...so space is sorta limited.
As for wine...gosh I've never seen anyone bring on board a 'case' or 'cases' of wine...water or soda maybe but never wine. But, we've seen plenty of wine, beer, etc. confiscated as passengers board various cruise ships. If the passengers get the bottles back in their cabins later I don't know...but on our last RCCL cruise passengers were lined up having their 'liquor' taken out from their luggage, tagged and set aside. I'd call HAL to be sure what their policy is so you'll have no surprises at the dock.