At the Wynn? Oh wait a minute, I think I just saw one!
They have laundry service. No coin operated machines.
They have laundry services, not coin operated machines. If you want coin operated laundry machines, I would recommend staying somewhere off strip.
They have employees laundry service, however if you are staying as a guest, you should be able to get room service by contacting front desk. The only thing I am not quite sure is if they have purchased and set up self-service coin operated laundry machines.
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