Because I practice Leave No Trace, I don't like using those carbide tips , the camera does not mark the ground like they do.
To have a drink I just go inside, or for water there is a tap at the end of the fence. Very handy.
BTW I first used this attachment to take pictures inside a wombat tunnel (using the self-timer). So it is useful for low and high shots that are otherwise difficult or impossible. There is now a commercially made telescopic type stick that is sold for self portraits, those tourist shots of you and friends in front of a famous building.