You're allowed to imbibe.

[WindyCityBlue]

This'll probably rankle a few...

An umpire's gear NEVER belongs on the field of play.
There...now I feel better. Think about it, you are bringing something onto the field that could affect the game. Don't do it...Put it behing the gate or back stop, not in one of the dugouts. I recognize that some of us work a couple of games in a row and may be alone...keep hydrated. But, we get enough grief without causing it ourselves.

At most good varsity parks and above, build a repoire with the kid retrieving foul balls. Smile, say thank you and when you need a drink, ask him if he can bring you one. Don't forget your partner(s).