Cost reduction.
Sharing a
bottomless soda between multiple people is strictly
forbidden in most
establishments. If you can all agree on
flavors and dont mind getting each other
sick, then you are set.
Road trip drink solution.
Smuggle several empty plastic
gallon milk jugs into your
booth. When
clerks are not watching, dump your entire
soda into the jugs. Refill. Remember a
funnel. Getting them out is far more difficult than in.