There's also the practical issue that room availability may change -- even at the last minute. I've had a few times where my preferred hotel was sold out (before I was a plat) beginning in the middle of my stay. I made an alternate reservation, then checked with the GM at some point during my stay and asked if they could extend my stay. They always have -- a couple of times they told me they had to wait until the morning of the scheduled checkout to confirm availability.

This may be much ado about nothing.