Las Vegas and Hawaii are probably the two most frequently requested destinations for reward trips.

As always, when wanting to use Saver (or whatever the equivalent is for your airline) you should try to book as soon as you know. There are few seats allocated for Las Vegas because it is such a popular destination... and they go quick.

I have heard (but not experienced) that at the last second seats may become available.

You are close to when you want the seats... so may be impossible to get a seat without paying the standard mile price.

Good Luck!!

William