Biggest advice i can give you
Water-lots of it
Some type of nuts- although most people say salted is bad, you lose alot of minerals in sweat and such, the extra salt helps even if it does make you a little more thirsty, almonds are my greatest recommendation.
A blanket of some sort- Ranger blankets may not be designed for comfort, but they are dam handy and do keep in alot of warmth while shedding water.
The important thing is not to stop questioning. Curiosity has its own reason for existing."-Albert Einstein