Rounding out the cast are Chris Hemsworth (the «Thor»
films) in the role of Stone Crandall, Rusty's irritatingly
successful brother - in - law; Charlie Day (the «Horrible Bosses»
films), who plays a river rafting guide; and Skyler Gisondo («Night at the Museum: Secret of the Tomb,» «Hard Sell») and Steele Stebbins («A
Haunted House 2»), who play Rusty's sons, James and Kevin.