Sheridan - nightlife on Friday or Saturday?

I am planning to be in Cody, Sheridan, Red Lodge on a Thursday, Friday, Saturday (in that order) the first week in October. I can change that around if I knew that Sheridan was 'not to miss' on a Saturday night for example? or Cody? not sure which nights are best spent in which towns. I am travelling solo and like to have a drink at a bar in the evenings and people watch, live music would be great! any advice?