I have been to a wedding before that wanted cash for presents and it is hard to work out what to give.

I have also been at a wedding whre it was pay your own way at reception.

For our wedding we had 2 gift registers a myer one and a flight centre one, that way people could get a present or give money it was there choice and only for guidance.

I think with greek orthodox it depends what part they come from as to whether money is pinned on dress, i worked with a girl who was cypriat and they got prsesnts and money so people had a choice.

Good luck with it