Proof that sometimes it’s the customers that get things slightly out of whack.  Best bit - “I’ve never had coffee in a glass before.  £1.80 a bit steep”.

As for the card itself - the picture leaves me feeling a bit queasy for some reason, but maybe that’s just me.  The centred text is a bit odd, as are the varying sizes between questions.  

But most importantly - it’s a comment card with very little room to leave a comment.  The request of an email address and a mobile number (for their promotional database) makes this too much about the desires of the company and not enough about providing service for the customer.