William Keck

Laverne & Shirley costar Michael McKean paid tribute to David Lander on Twitter
The actor says his parents were the same way, and it's what made things work long term
The blockbuster's director, Jennifer Lee, tells PEOPLE it's her "dream" to get Gad in an Olaf suit
Eva Longoria, meanwhile, brings the funny as Hollywood's top girls get a chance to celebrate each other
The blended extended family also gathered to celebrate Patricia Arquette's 46th birthday