The benefits that each Select Guest should receive are listed on the Omni chart:
http://www.omnihotels.com/SelectGues...rBenefits.aspx
As a reference point, a few months ago I stayed at the Omni Mandalay at a reduced rate (distressed AA passenger rate after a weather delay caused me to miss my flight). I did receive a stay credit, and the morning beverage selection card on this stay.