If you do online check in there are 3 scenarios you could have happen:
1. Bypass the Front Desk - When you are on Magical Express, or get on property if driving, you will receive a text message stating your room is not ready yet but you will receive a text when it is. Or if you room is ready your text will have your room
number. Either text you receive, you are good to skip the front desk and head straight to a park. Your Magic Bands will work for park entry and dining credits if on one of the Dining Plans.
2. Streamlined Check In - When you arrive at your resort you will look for the Streamlined Check In Kiosk and show the CM there your ID. The CM will give you your documents and your room number if your room is ready. If your room is not ready, you
will receive a text when it is with the room number. Once you see the CM you are free to go to a park or your room if ready.
3. Normal Online Check In - When you arrive you will go to the Online Check in desk give the CM your ID and they will give you your documents and your room number if your room is ready. If your room is not ready you will get a text when it is with the
room number.
Once you complete Online Check in you will receive a message, or an email, informing you which one of the above 3 scenarios you will use.
Hope this helps.