Lol. The soda thing used to be my life when I was a penniless little vagabond.

There was one Carls Jr. who caught me filling a water cup. But I was never caught bringing my own cup. I think it kind of is off the radar of what they're trained to respond to. (They don't want their staff making judgment calls and once in a while challenging someone who actually bought it.)

Plus, I'll spend my $2 or whatever of lunch money somewhere else if you challenge me, so you may as well let me poach a little soda and then I'll dine there :p