30 minute water wait?
there is no reason to wait 30 minutes after drinking to eat. And no, I don't think it includes protein shakes, since they are liquid and won't stay in your pouch long anyway.
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I have found that there is no reason to wait for 30 minutes on the before side, and that includes protein shakes for me. I'm talking abou****er and protein powder, not one with a bunch of fruit or veggies. Not sure how that would be. I do need to wait a little bit after liquid before I eat, but more like 5-10 minutes.
As for after, I usually need to wait more than 30 minutes to drind liquid after I eat! For me it's 45 minutes typically.
You'll need to see what works for you.