My surgery was May 2nd so I'm right at 3 months out. I took one sip of a coke vanilla and I was in pain for over an hour from the carbonation. I'm Gastric Bypass. I can tell you that won't ever happen again.
I can tell you one of my go-to items has been Diet Snapple Peach. I buy them in bottles and keep them handy along with soft ice from Sonics. Between those I have no problems meeting my liquid goal for the day.