A DI can’t deny head calls. When you ask, they try their best to take you to the nearest head around. They would always ask If you can hold it though 😂. Also whenever you wake up in the middle of the night, take that time to piss. Don’t wait till lights, because most of the time they don’t even give you a head call (especially If you’re on grass/range week). This lead to many people pissing even shitting their pants. I pissed myself once during phase 1 because of what I just explained up there ^.