No more coffee?

Yesterday we went to one of my favourite local cafes to do one of my favourite things - have a cup of coffee...
The experience, however, was ruined by the fact that my lovely latte was served in a non-recyclable landfill-destined polystyrene cup (plus plastic lid). So, we thought, we won't be able to go there during October.
Whilst we sat there the bins got fuller and fuller - how many bin bags must that cafe send each day to landfill?

And, what are we going to do about it?

Suggestions welcome.