Character mistake: King George VI got out of car in admiral's uniform without his cap and saluted another officer. RN officers do not salute without their caps.
Character mistake: Henry believed his call to the Saratoga County Help Line #1-518-555-0121 was not effective because Glenn's brother George was the Social Services Director. The genius failed to look above the county level and discover there's a STATEWIDE CPS number that he could have turned to #1-800-342-3720. A call to the State CPS hotline probably refers calls to the relevant county, but Henry could have used what he wrote in his notebook "Why Calling Child Protective Services is not a plausible option." (00:28:56 - 01:01:11)
Suggested correction: It isn't clear what number Henry called. He had the county number underlined on the brochure, so I assumed that was the number he called. However, I replayed that part and the person who answered said "Child Protective Services." There was another number above for "National Help Line for Victim Advocacy" 1-800-555-0199, but that's not the National Child Abuse Hotline.
Character mistake: Aunt Dottie, pointing to Will's Range Rover, said, "You're not taking that thing out tomorrow, are you? That thing's gonna get stuck before you can get started. You take the Ridgeline. That'll handle anything up there [mountains]." A Range Rover has great capability in all types of terrain and is rated as one of the best off-road SUV's - more than can be said for the Honda Ridgeline. (The movie is not classified as a comedy). (00:11:40)