Beware, if you stay at Wynn/Encore on a discounted room you will be assessed the Resort fee, which is steep, per night.
Also beware, if you do the buffet, I suggest breakfast or EARLY dinner meal. Both times we have done the Wynn buffet rather late, like 8-9 pm, and were very disappointed in the quality of the food (and the service). Actually would not have gone there at all the second time, but was given a comp by a table supervisor so went for it, hoping for a better experience. Not. I would hope it is just that the quality goes down in the later evening hours as things are winding down. Go early.