With so much information to parlay to your guests today, from directions to accomodations to multiple parties, invitation designers are trying to keep up. Necessity is the mother of invention, after all: if you're planning a wedding with many weekend events, I urge you to consider picking an invite with an organizing system. There are tons with self-enclosed folders to neatly contain multiple cards and other designs placed on tri-fold cards, like these by Just Ink on Paper. Regardless, a wedding website is a must for keeping guests in the know (especially those travelling to a destination). Check out the designs at http://www.wed-o-rama.com/.