Any festive occasion will do. Titanic is said have have been dressed to create a cheerful spectacle to make up for the fact that the ship would not be open for public inspection. It was common for new ships to be opened and funds for charity raised by admitting the public.
Many years ago....It has been over 50 years now. LOL
While attending the 1965 New York World's Fair I visited RMS Queen Mary and SS France.
I believe the proceeds from the sales of the admission tickets for visiting RMS Queen Mary went to some kind of a "Seaman's Fund."
Not sure about ticket proceeds on SS France.
At that time, these ships represented the oldest and newest in Passenger Ship Designs.
I had made plans that year to take a trip to England on RMS Queen Mary but cancelled in favor of the World's Fair. After seeing (on my visit ) the Tourist Class (Second Class ?) Cabin on C-Deck that I had made reservations for I was very glad I had cacelled my reservation !
Years later we stayed at Hotel Queen Mary at Long Beach, CA, USA.
We stayed in one of the former First Class Cabins on M-Deck.
I was very glad we did not cancel those reservations !