In the army we used to get a pack of instant coffee with the afternoon meal. We rarely wanted to shit ourselves later in the bush, so, no. We’d save it for whomever was fucked with guard shift that night.
Please understand there is no hot water at night; no real water supply at all. We do not traipse about the boonies looking for a stream, nor do we make a fire so it can be seen for miles. We even hide the pips on our wristwatch.
Not since bush coffee have I had instant coffee. And if I die without having instant coffee again - even properly prepared - it will be too soon.