I've replied to quite a few people and I'm going to bed now.
I'll edit the posts with updates when my poopless journey ends. Either when the three-day poopless period is over (28th June) or when the whole thing is over (30 June/1 July).
Okay I'll give in a tiny bit only because this barely narrows it down: one of them is ridiculously close to what is actually the case. Like, I'm actually doing the thing you mentioned in the point, just your reasoning is wrong.
P.S.: The actual reasoning is borderline impossible for anyone to guess so just stop trying guys.
I'll walk to a certain place... Take a train to place 2... on and on until I return to my current location for a few days and can finally poop again before starting on the same journey again (but i can poop this time).
I have only two days to prepare. I'll also have to walk around a lot during those three days so I don't think I'll be able to survive with only one meal.
This is kind of a group thing and I'm the only one not allowed to poop for personal reasons. They'll be expecting me to eat food that's at least somewhat normal.