There are ways to find a reasonable priced hotel room on the strip in one of the better hotels during these periods. The first step is to call early and make your reservation to secure a room at a reasonable rate. if the hotels think they will sell out, they will increase the rates. Also you can take a risk, after all you are going to Las Vegas and take a chance at the last minute.
Sometimes hotels will have empty rooms and will let them go cheap, however
you could end up without a room or staying some were you really do not like
or pay much more than you planned for Hotel Las Nevada Vegas.
If you are a gambler, you can also call your slot host and book a room at the casino rate. Sometimes you can get good deals this way as well.