I have magnet save the date magnets (large magnets from VP) for my save the dates. They fit perfectly in an A4 envelope. For those I am inviting with dates who I don't know the name of (those without longterm boyfriends/girlfriends now and such), I want to include a business-card sized insert to tell them they are invited to bring a guest so they can make travel arrangements. Here's my wording so far:
"Two seats have been reserved in your honor
Please feel free to invite a guest"
Is this good, or should I just include the first line? Any ideas for a better phrasing?