<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by sbrower:
I think (by memory) that this policy is disclosed at check-in. At that time you can still tell them you will take less nights than you have reserved. But not, supposedly, after you check in. </font>
In most hotels where I've seen the policy in effect, once you give them 24 hours notice they will not charge you. There is usually no need to tell them at check-in.