It Happened at the World's Fair (1963), 6+

Mike and Danny fly a crop duster, but because of Danny's gambling debts, a local sheriff seizes it. Trying to earn money, they hitch-hike to the World's Fair in Seattle. 
1h 45min | Comedy, Musical, Romance | 3 April 1963 | Color, WS
Director: Norman Taurog
Stars: Elvis Presley, Joan O'Brien, Gary Lockwood.
Jack Baker ... stager: musical numbers

https://www.imdb.com/title/tt0057191/

Watched online: part 1, part 2;  good print.

10 songs in the Soundtracks, all sung by EP.

EP spends a lot of time at the fair, and especially taking care of a little girl he just met a couple of days earlier. He was so cute with the kid that I looked to see when his own daughter was born ('68).

Because of the child, this was more engaging than most EP films. I may be stretching the point to call this a 6+.

The Seattle World's Fair took place in '62.

MGM, dir. Taurog; 6+