ITAW for or ITAP for a man who acts as if their presence is enough to warrant being fawned over?

I think of this as an 1930’s or 40’s concept where a man feels entitled to be treated well. The person is usually charming and somewhat attractive, but they take advantage of friends and move from friend to friend being treated to dinner etc.
They may have a signature drink they make and that, along with their scintillating personality is enough to warrant admiration.
Is there a word of phrase for that?
I keep thinking it’s “gad about town” but I think there’s something more descriptive.