Has anyone done a Big Bus Tour? How many buses do they have running at a time....IOW how long is the wait for another bus to come along if you hop off somewhere? I can't walk like I use to and bringing my sis... her first and only time to Vegas in Sept. She is in better shape than I am but even she says she can't walk like she use to. Both in our 50s. I thought it would be a great way for her to see everything....since we won't be walking the entire strip. I have read oodles of reviews on TA and their website says it takes 90 mins to make an entire loop....was hoping it wouldn't be 90 mins if we hop off before we can hop on again. Bringing a nongambling newbie is going to be an experience for me,....I have to research all kinds of things that don't normally interest me so I'm sure I will have more questions in the coming months.