"It Happened At The World's Fair" had plenty of fun songs on it, including "Beyond The Bend", "Take Me To The Fair", "One Broken Heart For Sale", and "Happy Ending". There's even the naughty little "Relax" song and the strong ballad "They Remind Me Too Much Of You".
"Fun In Acapulco" shows the versatility of Elvis with some Spanish thrown in the mix in "Vino, Dinero Y Amor" and "Guadalajara". He scores on the rocker "Bossa Nova Baby", which made it into the Top 10 on the U.S. charts, and some good ballads in "El Toro", "Marguerita" and "You Can't Say No In Acapulco". There's even some fun ones that kind of preview his future dismal soundtrack songs, such as "The Bullfighter Was A Lady" and "No Room To Rhumba In A Sports Car". You can tell he has fun with the last two, but unfortunately it would become a theme to sing corny songs in future soundtracks that were loaded with material like this.
Overall, two strong soundtracks. Both pre-1964 soundtracks, which is basically the cutoff year for Elvis' best soundtracks from top to bottom. After that, they take a downward turn and only a couple songs on each are very solid.