Although I have been to vegas many times, I never really play for comps but I do play alot. I have read on hear about not gambling at properties during part of a day unless you are going to spend the time/money that you need to complete a day. Not sure if I am explaining this correctly or not. Anyway - here is my question/concern. We are going for 5 days but will be gone for a day and 1/2 trip to Zion in the middle of the time (will not be checking out of our hotel in vegas). So we will leave around noon and return early evening the next day. I stay at CET as they have always comped my rooms upfront even though I don't go every year and am a low roller. I don't want to lose that little benefit so should I refrain from playing at a CET property that morning that we take off. I think I will get plenty of play time on the return day as I like to play in the evenings. So my question is what is a day in vegas for this purpose? Does it start at midnight? Hope my question makes sense. Thanks in advance.