They will email you a couple days before. We had our carry on and a car seat that we brought to the lobby with us for under the bus. This is from 2/5.
"For those of you staying at your Walt Disney World Resort pick-up location, Bell Services will begin luggage pick-up at 7:00 AM (EST) on the morning of your sailing. Please place the luggage you wish to transfer to the ship inside your resort room (with Disney Cruise Line luggage tags attached) near the entrance door. You do not need to be present for your luggage to be collected. Should you need additional Disney Cruise Line luggage tags, they may be obtained at the Bell Services Desk or from a Disney Cruise Line representative."
For our December cruise, we got the same email mentioned above. We had it ready by 7 AM and it was picked up while we were at breakfast. We kept our backpacks with us and sat with them on our laps on the bus.
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