Plot summary
Tensions rise between Charlotte and Cooper when both their parents come for the wedding. Pete and Addison are questioned in Violet's case. Sam and Addison decide that they aren't going to tell anyone that they have broken up, only for Addison to tell Naomi. Naomi and Dr. Fife work on a woman that Naomi has known, and who has suddenly become depressed; Charlotte finds that Cooper's parents don't like her. Amelia is asked to be Charlotte's maid of honor at the wedding. At the reception, Cooper and Charlotte's parents tell them that they don't believe they should be getting married. The day of the wedding, Cooper and Charlotte decide to go to Vegas instead of dealing with their families. Amelia accidentally takes a sip of champagne instead of ginger ale. The medical board goes after the practice when they decide the way the doctors' work is unethical.
Credits
Adapted from Wikipedia contributors, Private Practice season 4. HTML formatting and reference markers removed.