[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/08/02/art.chelseaclintonwedding.image7.kinney.jpg caption =" Chelsea Clinton married Marc Mezvinsky on Saturday."](CNN) - The wedding reception revelry for Chelsea Clinton and Marc Mezvinsky stretched well into the early hours of Sunday morning with guests offered a 2 A.M. snack of grilled cheese sandwiches, brownies and popcorn for the ride home, according to an invited guest.
The source says the former President Clinton and Secretary of State Hillary Rodham Clinton gave a welcoming address to the attendees. And the dinner reception included a choice of beef or arctic char (fish), risotto and salad.
The former first daughter and her longtime beau married in a much discussed but highly secretive wedding in Rhinebeck, N.Y. on Saturday.
Related: Chelsea Clinton ties the knot