well if you haven't signed up yet...here is $5 off your first drink
https://refer.rooam.co/BDGfyhq5q0
I noticed a pretty decent hack the last time I used this service. It's probably not possible for the long term unless you were Space... but I digress.
I had a card tied to my account that was compromised and I hadn't updated the app since the last time I used it.
Anyway, I ran up a decent $100 or so tab and there was no way for ROOAM to charge me. I received notices for a while and simply ignored them, however, when I went to my next show at The Anthem I had to update the account with a proper card.
I was then charged for the previous bill.
The end.