I think not.
Can I drink an ice capp during a tournament???

Just drink some juice and maybe a few candy bars, caffeine will only hurt you, especially in a high stakes game.

I highly advise you not to drink any beverages during tournaments; not because of the caffeine, but due to the possibility of your beverage spilling its contents all over your newly bought computer.

Is it beneficial for me to drink anything with caffeine in it during a chess tournament game
I'm thinking about drinking pure orange juice.
If you are playing OTB, depends on the rules of the site.
Is it beneficial for me to drink anything with caffeine in it during a chess tournament game
I'm thinking about drinking pure orange juice.
Yes, it`s OK provided you garnish it with Madagascar cinnamon.

drink something with low sugar like fruit juice, in tournaments, bananas and chocolate are also quite helpful.

well wait a sec. the maple leaf is...nvm. look at ur flag.
p.s. i luv these w/ a latte. sugar jack...yee !
..

nothing you eat or drink will enhance your physical capabilities or mental capabilities, neither will any food or drink enhance your chess capabilities.
Just eat and drink something that will fill you up, then go to the tournament. Of if you have to eat there just eat or drink whatever is available.
Dietary wise, it really doesn't matter what you eat or drink in context of chess.
Is it beneficial for me to drink anything with caffeine in it during a chess tournament game
I'm thinking about drinking pure orange juice.