Travel size games are a wonderful gift for your guests.

If your budget allows, I love the idea of buying a game for each of your guests or one per family or couple and sending them with a letter thanking them for making the trip to see you get married.   This is just one more way to set the stage and to get your guests more excited about their vacation to see you get married.  You might even ask that they bring them (though I am sure they will!) and plan a game day, a great icebreaker.