I am already hating wedding planning without the crappiness of wording. Regardless someone is going to be offended by how you phrase the gift bit (don't worry I've already vetoed the poem). I mean some will be upset you'd dare to hint they might want to get you something.
But now the debate of evening food.
If I wrote: light evening food - what sort of thing would you think I was serving?
For full disclosure, evening guests would be invited from about 17.30.