We won by losing.

The Commander used up her gambling credits and won $25 after putting $20 of Casino money in.  Kadizzle put in $20 of the Casino money and got back $13.  Our camping cost for two nights is $40.  With the donation from the slot machine it will only cost us $2.  Considering all the electricity we are using to stay warm instead of propane it looks like we stay for free.  The trick is to take the money every time you win.  If it had been all our money we were using we would have lost $2.  Wonderful math lesson on how gambling works.  This shows how Wall Street wins, you gamble with someone else's money.  On Wall Street if you lose the government bails you out, even if you cheat you don't have to go to jail.