Need help going on the Dream

[disney fan 1994]

OK we just booked our vacation on the Dream and I have been reading about all these little secrets and wonderful things people do on the ship. We are traveling with 5 people that will be new to cruising and then my family that this will be our first on the Dream but have been on Magic and Wonder. We would love to do the door decorating and I read someting about bags by the door but not sure if anyone wants to share tips please feel free. Thanks for the help. Happy saling