Beats having to talk to your date
Now, instead of spending a romantic evening (though in an M&B theme-pub? maybe not) each party will be able to prepare themselves for their future lives together by ignoring each other and spending the evening SMS-ing their friends, surfing the dating sites for better prospects or just watching the TV that they'd have otherwise missed by dint of being in the pub.
Many couples attribute the success of their relationships to the simple technique of never talking to each other. It sounds like adding another opportunity for mutual avoidance could even help them stay together.