Be warned about Planet Hollywood Comps

I had earned about $125 or so in comps from Planet Hollywood after an intensive evening (well intensive morning I guess) playing Black Jack. I did not use them that day, and even though I was told they would be good anytime for me by several people in the pit. However, when I came back to take advantage of them, I was told by a host that I could only use them the day of play, and that this was Planet Hollywood's policy. At any other casino where I have received comps (The M, Red Rock, Bellagio, etc), the comps have been there for whenever I wanted them, but at Planet Hollywood, if you do not use them then and there they will be taken away from you. Tsk Tsk.