Sentence examples for only upon invitation from inspiring English sources

My advice for guests is: Become a guest only upon invitation.

Access to use Cameos is only available upon invitation.

They stated that they would come to an examination upon invitation, but such invitations are rare.

It's only another invitation.

Only one invitation was accepted.

New members can join only by invitation.

It is available only by invitation.

(So far, it is accessible only by invitation).

He opens only by invitation, when he feels like it.

Upon invitation from the military government, Perón returned to Argentina for a short time in November 1972.

Many collections and museums were open only by invitation.