yes falling rain i was in Northern Ireland...i remember the cook being pi---- off that every day he would have to re-sort out the bacon and eggs for breakfast as we would always raid the kicten after a patrol during the night
The top cover KOSB's used to take out trays of eggs to pelt the yobs with.
We drink "poeroet".
This is a combination of hot water, chocolate powder, coffee, creamer, suger (all included in dutch rations) Mix everything up and there you have "poeroet" this is an indonesian name for hot chocolate.
Here's a boring science bit: Aren't tea and coffee diuretics? (Likely to make you lose more fluid by urinating out more than you take in), contributing to dehydration?
Whether this matters or not depends on what sort of margins you're working to in the field I guess, but I'd favour the ration pack drinking chocolate, also tastes good!