Very few hotels offer free wi-fi access in their rooms, with most charging something in the region of $8.95 (Cannery) to $13.99 (Wynn/Encore) per day for the in-room privilege. In the case of some properties, like Station Casinos, it's included in the "resort fee" (Aliante Station: $14.95/day; Boulder Station: $10.85/day; Green Valley Ranch: $27:49/day).
The only hotels that offer genuinely free wi-fi access tend to be those more oriented toward conventioneers than tourists, including the Best Western, Double Tree, Super 8, Residence Inn, and Fairfield Inn chains. The Royal Resort offers the first 30 minutes Wi-Fi access for free, with a daily rate thereafter. Click here for our complete list of hotels, with phone numbers and website links.
Assuming you have your laptop with you, however, there are all kinds of options around town for free Wi-Fi connectivity, from sports bars to hookah lounges, coffee shops to pools. You can check out the complete list right here (and email us if you've found one that we don't know about).