At the beginning of the "Do It Again" performance from the Ed Sullivan Show, the caption says it's from 1967. It was actually from October 1968.
The caption when Brian Wilson is playing "Surf's Up" says it was from his home in Bel Air. It was actually Laurel Canyon - he wouldn't live in Bel Air until the following year.
The text at the end of the film says that Mike Love "still" practices transcendental meditation. Even though most fans know that he has always been very involved in TM, there is no other mention of TM in the entire film. (Perhaps this is an indication that there was a scene not included that does discuss Mike's involvement with TM.)