I'd be elated if my hunger had never come back (unfortunately, mine came roaring back at five months out), but yea - that retching would be awful. I'm sorry you're dealing with this.
P.S. I could never do a buffet anymore. I can eat more than you, but it's not enough to justify what you pay for to eat at those. I usually order an entree and take 1/2 of it home. Unfortunately, you can't box up uneaten buffet items and take them home with you like you can with regular orders - so I never get those anymore