Anything carried on must be able to fit through an airline size screener machine.....same process as the airlines....you must remove things that will set off the buzzer, put some of your stuff in bins, etc.
This security step is new since 9/11. Anyone who cruised before 9/11 was pretty much able to lug their larger suitcases onboard.
If you don't mind my asking...why would you want to drag your full size suitcase onboard with you? Could you possibly pack what you need to keep with you in a smaller bag and let the porters handle the rest...not judging...just curious!!!
Luggage gets to your stateroom by 6:00 pm the latest and ususally starts showing up in dribs and drabs during the afternoon. Not all your luggage will show up at the exact same time.
MJ