To be honest I laughed and joked about it with the guy in 3C - we both couldn't believe the 'front' of someone to be so stupid - how can you possibly confuse 3 with 17?

GBOAC's case is a classic mistake which unfortunately was not the case on this occasion!

Any problems and obviously the crew would have been the last resort as after all, how would I have known where was free to sit!

I think the situation was made worse for the lady in question by Club being full and quite small so everyone was looking to see what was going on!