Fonts style is having very important role in wedding cards.
Typefaces (Fonts) that mimic cursive handwriting (script fonts) or fonts made from actual handwriting samples can convey a quiet elegance, personalize a form letter, or exude cheerfulness, playfulness or a casual mood. However, there are some places where script typefaces are inappropriate.
1. Match script fonts to the tone of your document. Choose a script typeface that is in keeping with the overall tone of your document — whether formal, informal, elegant, or casual. Script faces that mimic the actual handwriting of someone are generally more informal or casual than the formal script fonts used in Wedding invitations, for example.
2. Say no to ALL CAPS for script fonts. Don't use script faces in ALL CAPS. They are much harder to read.
3. Don't mix scripts. Avoid mixing two or more script faces in a single document. They usually clash.
4. Give script fonts more room. Allow extra character or line spacing for script faces with exaggerated features or extra curves, swashes, and curls.
5. Keep lines of text short. Avoid long lines and complete paragraphs of only script type. It is usually too difficult to read.
Tips:
1. Match script fonts with graphics. Match the tone of your script typeface with the tone of the graphics used in your publication — casual with casual, etc.
Courtesy : about.com