Their fans shrugged off fears of a points deduction and hailed their side as 'champions', but Watford's fans responded by warning them 'you're gonna lose in the play-offs'.
Yet Warnock basked in the glory of the seventh promotion of his career and insisted: "It's a wonderful feeling.
"I think it's the best job I've ever done, I've got other promotions but not in such a short space of time, in 13 months from battling relegation to winning the Championship.
"Over the season the players have been magnificent. I can't fault any of them."
The FA hearing will begin on Tuesday and a decision on the seven charges facing the club is expected on Friday, the day before the final matches of the Championship season.
Warnock was furious at reports claiming they face a 15-point deduction if found guilty, and admitted his players were also affected.
"I just get on with winning games," he added.
"When I looked at the coverage it destroyed us, the place was like a morgue.
"We're all guessing, we have to wait until Friday. I'm happy with what my barrister has told me.
"I don't fear anything, I was brought in to win promotion and that's what I've done.
"You can do without it as a manager but you've got to get on with it. I'll be glad when it's over and then I can talk about it."