Shannon thanks Vicki Gunvalson for coming to her defense and tries to rise above the drama before their big trip.
Shannon isn't proud of her dinner party behavior, but she wonders how the other ladies can live with their lies.
Shannon can't believe Tamra and Heather could keep lying when they have both been caught.
Shannon reveals that both she and David have learned from their mistakes and are successfully moving forward.
Shannon defends her relationship with David and their fight in Mexico.
Shannon and David join Vicki and Brooks in Puerto Vallarta; Tamra tries to convince Eddie to take care of robo-baby Astro.