You're not supposed to put anything extraneous in the invitations, not even a footnote, but you can put whatever you want to in your newsletter. You can make it informative, but fun, like your wedding.

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Newsletters and Web sites are a great opportunity for couples to put all of the information about the wedding in one place - where they're registered, guest hotel accommodations, events that will be going on surrounding the wedding. And you could also include events leading up to the wedding, such as showers and parties.

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