True. Though I did say about 7 days, not within 7 days. Still, I guess my point was not clear.
The point I was trying to make was they will assign you a room prior to your arrival, no matter what you opt to do in regards to online check in.
I believe this is done about 3 days before, approx.
If you wait till it gets too close you may loose the chance to have them consider your preferences. If you make them within about 7 days they should have them there when they make the assignments and hopefully they take them in to consideration