Returning to the Big Screen

A short film I'm in will be screening at Laemmle’s Sunset 5 as part of LA Shorts Fest '09. Returning is the story of a young man who was kidnapped and forced to work on a farm as a child and who is rescued and returned to his family 10 years later. Films screened at this event are eligible for Academy Award consideration. So should I rent the tux, or buy?