No affiliate program as of yet and only nevada residents can play. To be honest i dont think there ever going to launch an affiliate program.
Sadly, this is true, and might even be the case once online casinos are offered. This is already in the works in both Nevada and New Jersey, and the only big fight is over getting permission to accept players nationally.
Nevada’s governor has already started asking other state governors for private online gambling compacts (there’s almost a way around every law 
). These wouldn’t necessarily be subject to Federal interference if written correctly and both states benefit from the action.
Frankly, I don’t see Wynn, Fertitta, MGM, or any other group offering 25% revenue share for life. A couple good traditional media blasts and players will leave the 15X rollover, 10 day payout wait at the best online casinos for more trustworthy USA based brands, all of which offer some legal recourse if the games are rigged or money doesn’t get paid.
Marketing will be a cinch: USAToday, among others, covered the UltimatePoker.com launch. Usually online gambling only gets covered if someone is being arrested.
It’s possible large Vegas brands might do something similar to Twin Spires Affiliates Revenue Scheme, that is strictly a small CPA on a sliding scale that increases based on new depositors each month. The scale resets to zero the next month (so if you sent 20 players Month A you earn $80 a piece, but if you only send 3 in month B, you earn $60 each).
Remember, offering rev-share might not officially be legal in the USA (yet), so they can ignore this technicality and low ball affiliates.
Smaller affiliates building businesses will have a hard time competing. 10 new depositing players to WynnOnline at $80 CPA a piece is $800, hardly a living wage. On a rev-share, you stand to make more in the long run. The whales that many of us thrive on will produce a cheap CPA and nothing more. You might not even know if a player was a whale or not, depending on how statistics are tracked.
Once the USA market gets moving players will disappear from the offshores in a matter of months, and I don’t see Atlantic City or Vegas brands being particularly generous with affiliates if they don’t have to…