[xandrius]

I'd imagine the keyword is "have to attend".

If you truly have no choice then who's to blame you but if you decide to show up to a party and then proceed to walk around and look at the furniture all night then maybe you could have put a minimum amount of effort to engage with others who could have stayed at home that day?

But if you are somewhere to listen to some nice talks and then they force you to "network" then I'd say it's totally ok to sit it out and avoid anything unwanted.