After reading everyone's suggestions, I think we'll definitely see Mystere. According to the Treasure Island web site, Mystere does show dates for the days we'll be there.

I've never used Priceline before for booking hotel rooms. But I've always thought Priceline doesn't tell you what hotel your booking until after the fact. How exactly does it work? I really do want to stay at the Venetian. The rooms there look really great and they are nice and spacious too. I've stayed at Treasure Island before, as someone suggested, and it was fine. But as I said, I want the best possible, without giving away the farm, since I'm taking my mother. Besides, my mom is an artist and she's interested in seeing the art museum(s) at the Venetian. Also, about one year ago, I took her to a Wyndham spa here in South Florida. Although I thought it was very average, my mother thought it was "very classy." I want her to experience the Canyon Ranch Spa. at the Venetian, and find out what "classy" really means!