I do want to add that early in my banding I could feel something getting stuck--and normally (pre-Banding) you would wash it down, right? Oh NO, not after banding!! It just got stuck much worse and I thought I was going to die!!
When you stop to think that the stoma (opening between the pouch and our old tummy) is the "size of a straw" (as my surgeon said), it would be easy to push something down with liquid and have it become trapped.
Y'know, I find that 30 minutes before and 45 minutes after is NOT that long--so it's better to just play it safe...