I really can't see how it would be cheaper, I don't drink and drive anyway so that's not an issue. If the weekly rental is lets say 240 incl tax. and you want to do even 1 excursion to lets say YS/ Pelican. you are looking at $200 for just the driver, nevermind the convienience of being able to just go. I don't drive after dark so i still use a taxi if i go out. But for the extra $40 i will always have to go with the car. I like getting lost. I could tell some stories of situations I have found myself in What adventures, i have had driving around.