Since I will very likely not do much driving around LV I was wondering if it is possible to get to the G Canyon and back by methods other than renting a car? I have a 2 night reservation at Bright Angel (Wed / Thurs) so the day trip buses will not work for me. Are there other options that might work? I even researched a short 4 day rental but so far the rates are the same or just $20 cheaper than a full week. Suggestions?