Taxi vs. Red Tour Bus by stappm
We took the Red tour bus one evening and went back to get a 3 day pass the next day.... after waiting 40 min and watching 3 buses pass us by, they were all full. We decided the bus pass was not a very good deal if you could not actually get on one!
So..... If you are a group of 3 or more people I would recommed cabbing it to and from your pick of sites, you'll save time and probably spend about the same amount of money, collectively.