_ _ N W _ N _ _ _ _ U _ _ _ _ _ _ _ N _ _ U _ W _ _ _ _ N _ Y _ W _ _ _ _ _ _ R _

Here is a clue. There are 41 letters in the sentence.
Here is another clue. There are 30 missing letters now.
If not solved by Sunday evening I will award two different Twin Towers to the winner.
The first person to figure out the sentence wins a free Twin Towers silver strike. Choice of Twin Towers from Gold Coast, LV Club, Suncoast or McCarran. If solved with only three letters or less I will give a blue case Twin Towers from the Plaza. I will add a letter each day until solved. This one is tougher as all the words are crowded together. One guess per day per person.