Just bought a tablet and wanted to know if I go on android market and rent a movie, how does that work? How long is rental? And it only works with wifi? I'm going on trip and there is no wifi so I would have download movie onto tablet. I would assume when it says rent movie in the market that is for streaming only?? not sure if it allows you to download the rental and watch without wifi or do have to purchase a movie and download right to your computer or tablet. Please explain how I can do this. Thanks steve