My suggestion is follow your surgeon's recommendation. There are way to many variations on what one doctor thinks compared to what others think.
My program was no liquids 30 minutes before and 30 minutes after. Now that I can eat more and feel some hunger I'll drink up to my planned meal and then wait 30 minutes or so after eating before drinking again.
Proximal RNY Lap - 02/21/05
9 years committed ~ 100% EWL and Maintaining