1. Make your invitation POP! With everyone getting married and having husiness meetings, holiday parties, and conferences, your invitation has to really catch the attention of your classmates! Think about the type of party you're hosting (casual, themed, cocktail hour) and try to get creative with it. Our mascots were the Tigers, so I was inspired with a tiger print "Walk on the Wild Side" theme to show a fun "cocktail hour" lounge theme.
2. Stop the food! We've all been to enough networking and social events to know that the food is not important!! Have enough hours d'ouerves to let people snack, but a full sit down dinner is not necessary. The reason people are attending the reunion is to reaquaint themselves with lost friends and catch up with what's been going on. The last you want to do is lock everyone down to a seat the whole night with food in their mouths. As a candy lover, I'm all about the candy stations with little take home bags that people can pack for later.3. Keep the Drinks Flowing! Not that everyone drinks alcohol, but for those that do, I imagine you'll want a cocktail in hand when you're re-meeting people again. Open bar would be fantastic, but it could also be dangerous. So perhaps allowing the ticket price to include 2 drinks, or if you come early that there's free drinks for the first 30 minutes would be an incentive to come early and start mingling.
Following the theme, create a signature drink! This one is called "Orange Blossom"
4. Play some games. Now this one will depend on the type of class you have, but since everyone attending is obviously interested in learning what everyone else has been doing, might as well make some games out of it and make it fun! Games can be as simple as asking who traveled the furthest, who has been married the longest, who has the most kids, etc. Prizes can be given afterward.
Reunions are supposed to be fun! Remember that you want to make all your classmates comfortable and make it worthwhile to have traveled all the way there to see everyone again. It should be a good mix of high school/adult mixer/ice breakers so that you can incorporate all types of people. Have fun!