I like to use them because I hate carrying cash and I don't like credit cards/debit cards a whole lot - especially with how much identity theft is out there. Plus, if my debit card got stolen while at WDW, I would then have no access to my money. However, with travelers checks, they're the same as cash, and it might be a hassle to have to spend an extra 2 seconds to sign your name on them, but at least if they got stolen, I could have new ones very quickly!!