You dont pay for the holes or moths per say. They come included.
Holes are free, but moths cost a lot of money because their wings are so tiny!
You should call them since hotel rates change depending on time and business demands.
You should call to check rates and I'm sure the Wynn would most likely not be your best bet if you are staying for that long. An Airbnb may be a better option or maybe a hotel that has suites (with a kitchen).
Prices vary based on time of year and availability. I would recommend checking out hospitality sites/apps. HotelTonight typically has good deals.
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