When a group of college band mates reunite 15 years after graduation to sing at a friend's wedding, they take a break from their less-than-perfect lives to spend a long weekend at a cozy Hamptons beach house with their spouses, children, friends and one Swedish nanny in tow. Reuniting with lifelong friends provides them with some much-needed perspective on how their lives have progressed - and in some cases, regressed - since their college heyday. WEDDING WEEKEND stars Molly Shannon (?Saturday Night Live,? How the Grinch Stole Christmas) and Rosemarie DeWitt (Rachel Getting Married, ?Mad Men?).