Pitted on dry lake one year 128 , just constantly drink water and wear a hat youll be fine. Its going to be 120 in Havasu this weekend. Been here 30 years and wonder why do I still live here haha. Be safe everyone
Alcohol and caffeine are both diuretics. Generally coffee will have no net benefit. For alcohol there is a lot of debate over what % begins to be a net negative, unfortunately they are very low. Another aspect with alcohol is that it slows down the production of anti-diuretic hormones which then cause you to become dehydrated. For any runs >10 miles I make sure to have plenty of water (I drink 1 gal a day on average) and a Nuun for electrolyte replacement."They" push you not to drink alcohol or caffeine laden drinks like Coke, because it dehydrates you. While it may not be great for you, it has to be better than nothing, since both are mostly water.
Shoot for 2 water bottles an hour and eat normal meals. If you pee every 30-45 minutes, you are too hydrated and actually flushing nutrients from your system. Try to pee every 1-1.5 hours and you shouldn't see any heat related issues.
FWIW, coors light is 95% water so it won't dehydrate you as much as everyone wants you to believe. I don't condone replacing water with coors light though.