Alright, virtual convention is done! Time to unveil the answers I got!
Mitchell did not know or remember recording male vocals for 'If Only' so he gave me a generic 'yes' when I asked if those vocals were supposed to be Ben (to be fair, it's been almost 10 years since the first Descendants came out...and now I feel old). Brenna though thought it could have been maybe foreshadowing Hades slightly, as a father daughter relationship. So until I get the chance to ask Kenny, we're just going to say that yes, that is Ben singing in the background.
Mitchell does not think Jay would be part genie because he thinks that if Jafar was a genie when all the villains got put on the Isle, then Jafar would have been the most powerful and the most evil so he thinks that Jafar being put on the Isle is from before he makes the wish to become a genie. However, I prefer Brenna's answer to that question so you might find that Jay gets some dormant genie powers in my fics lol :D
The mini bow between Ben and Carlos in 'You and Me' was not scripted by Kenny. Cameron apparently wanted to sneak a dab into the dance and Mitchell was all for it, and Kenny didn't realize that's what they were doing but thought that it was a dance move they thought up on the spot. Brenna apparently was 100% against them doing that.
Brenna's birthday is one day after mine--I already knew that before this virtual convention, I just thought it was cool to share lol :D
Bart Johnson did not know why they have the 'Troy....listen...' line start 'Gotta Go My Own Way' in the HSM2 soundtrack when she does not say that in the movie.
Wow...honestly I'm kinda impressed I remembered all that considering I'm pretty sure I've only gotten 4 hours of sleep and have been relying on caffeine and sushi to make sure I didn't miss anything from the convention.