We're leaving Friday. Did a bunch of research. Originally had Super shuttle and cancelled after hearing how unreliable it was. People on here have said Magic Express is great but Yelp reviews say otherwise. We ended up going with a rental car because for a week it was $100, about what those other services would cost.
If the car didn't work out being so cheap I would have went with Lyft/uber as PP said. Convenient, cost effective, gets you where you need to go.