They may have relaxed the bathroom break rule since 2009 (when the article I linked is from). But if they're scheduling an all-day event and encouraging people to miss meals, that's a serious flaw. I, at least, need food to think clearly. And I need the equivalent of three solid meals. I know I'm not the only one in this situation.

If Landmark isn't accounting for this, then they're not interested in having participants think clearly about what they're hearing. That, to me, is enough: when I'm trying to change my life, I want to make a decision with my full brainpower. And that means being well-fed.