What is a Toulouse InterNations event like?

Hi everyone, please pardon me if this is a rude question but...

What is a Toulouse InterNations event like? I'm an InterNations member. My wife and I moved to Toulouse from NYC 4 months ago. We have yet to go to any events. There is an event tomorrow:

InterNations Toulouse 2nd August Event @ La Cantine de l’Opéra

and 86 people have signed up for it. Are 86 people really going to show up? That sounds like a very big crowd! Quite often by the time we see an event posting it has reached its max capacity.

Do mostly single people attend these events? What ages? I'm really wondering if a married couple in their 40's would feel comfortable with this group : )

Neal