An example of what a date night might be would be cool. Will you be geo-specific or general? ie: how about italian tonight or how about dinner at The Chophouse downtown?
A tie in with specials / promotions might be cool too: "2 for 1 drinks at this restaurant tonight"
I think if you collect some more information, you could produce better results: q: do you have a vacation planned and where? and you could provide a place to eat, something to do, etc...