Other than the INSANE slowdowns and beach-balling I experienced the first time I was booted into Mojave (which were cured by a shut down/restart) my upgrade was also effortless.
Give yourself a pat on the back for having helped to make it happen that way.
Oh, one weirdness... Mojave launched while Installer was telling me that I still had 17 (yeah, seventeen) minutes to go. Those timers have never been particularly accurate, but that was ridiculous.
