My experience with Lone Butte is that it's best to drive a few miles farther to Wild Horse Casino. Lone Butte is small, crowded, the pay outs are meager (compared to all others locally except Vee Quivo), the choices of slots is poor, and the gaming tables are few and overcrowded.
For the last ten years or so, I'd give Lone Butte a chance at least once a year, hoping they changed something, only to walk out one more time disappointed and wondering why I keep giving them another chance. Wild Horse or Casino Arizona (for me) are consistently better and worth the extra 10-15 minutes of drive. At the same time, Wild Horse is owned by the same company that Owns Lone Butte, so I am puzzled why the one seems so much better than the other.
Check out the pay-tables on Video Poker before playing.
Last note - the restaurants and bars are excellent in Lone Butte, if you go to a Casino for dining more than gambling.