The one time I was in a casino was for a work trip and our guide said the one restaurant was really good and cheap (at the time.) It was both, and we ate way too much. Afterwards, we wandered around for a while. I played a $2.00 roll of nickle slots just because I wanted to try a real slot machine. Eh... Anyway, no windows, no clocks, and there was this angelic choir constantly going "mmmmmmmmmmmmmmmmmmmmm" in the background. It was all flash and glitter and very well lit so you didn't realize that you were getting tired or that time was passing. Quite the lesson in design, that place.