Titled = having been given a title. Applies to everything people, books, pictures, artworks, buildings, play, films, drams, poetry and a persons name and your name my name,. Everything you can think off.
Titled also ="being given a Title" such as a Knighthood or an honorific of any kind.
Entitled = having the right to claim or hold something. A knight with the honour or honorific of being called a knight is both a tiled person and entitled to be called a Knight.
I would say titled is better for your sentence. We are only taking about an event. An event normally does not hold any entitlement, Other than being held at the place where it is presumably legally allowed to be held.