I will do just about anything to avoid having to take any kind of shuttle or public transportation. So no Super Shuttle, DL shuttle, public bus etc.
I seriously dislike having to stuff into a crowded & hot van with tired adults & cranky kids- my family included! This is just NOT the way I want to start my vacay!
We usually try & rent our own car. If we aren't going to be doing any other driving & a car isn't really needed then we will take a taxi or I will hire a car service.
Frankly, I would much rather shell out $100 for a car service (or whatever price is) & be able to relax & have someone familiar with the city drive us to our hotel. And really- I don't think a shuttle saves that much money....especially when you consider the hassle.