>>324038889
This is poor form. Your word is important as an event maker. You have two options now as I see it.

Make no exceptions and have them be in fancy cat to watch the event there
OR
Make no exceptions and have them be a couple or find a coupler before the deadline and go into the ball as couples

Anon's view on the event is important too. If they feel like they'll be joining an event to be laughed at by "elites" then that is pretty bad. Hold onto your word and people will follow