Get a Fanny Pack! It isn't sexy but it'll keep your money safe and sound. Please be smart and realize that the money is a loan and you are personally responsible for it. 

Lots of Money Denominations: You should get money in 20s, 10s, 5s, and 1s. Round Down if a books scans for $10.50. Don't make change! You can hit up a bank in the morning if necessary and the Comdata cards work at any ATM. Remember that the ATM will more than likely give you 20's and you will need to make change.