I really don't get the purpose of this post. You want others to drink with meals because you think they'll be as successful as you? I thought you regretted your surgery?
Anecdotally, a lot of people *****gain ARE people who drink with their meals or soon after. Our RNY anatomy is not conducive with drinking while eating for many reasons.
I'm glad you consider yourself a success and I hope you manage to maintain this positivity because you do seem to struggle with that often.
I can probably answer your question on what would happen to you if you did not drink while eating ... nothing, other than you might get thirsty! I doubt very much that you would be malnourished!!! I am 8 years post RNY, am maintaining a 100% EWL and don't drink with my meals ... and I am nowhere near malnourished or struggling!
At the end of the day it's people's choice how they live their RNY life, but for me it feels much better to encourage people to follow the rules, where they are sensible, than to encourage people to do something that may stymie their success!