We now know that his return was a huge triumph, but there was no guarantee that it was going to be. Perhaps the Colonel wanted to make sure Elvis was going to be well received in Las Vegas before capturing the event on film. He probably remembered what happened in 1956 and wanted to exercise caution. Sure, times had changed, but it was likely still seen as a gamble. I wish we had both seasons on film, rather than one or the other. Elvis' performances were more charged in 1969, but far more polished and with greater variety of songs in 1970.