My fiance and I are planning to move overseas about a month after our wedding. We will be teaching at an international school. We do not have a lot of need for wedding gifts. The power wattage is different from USA and it is very expensive to ship gifts to us. We would prefer to receive cash or gift cards that will help us purchase items once we have moved. I know it is reccommended to only do this by word of mouth, but is there any way to tastefully put this in writing either on the shower invitations or ceremony invitations?