We're going on our 4th Disney cruise on 3/10, which I just booked and paid in full through a travel agent. A few days after paying I checked the DCL site just to see if there were rooms still available and noticed that they had our category available but it was a little bit cheaper. I didn't say anything to the TA or DCL since it wasn't much of a difference, then checked my checking account this morning to see that DCL refunded me the difference. Do they just automatically do this? Very cool!!