Your options are basically...
Ride Share Cheapest and probably about the fastest
Taxi Possibly slightly slower and slightly more expensive
Shared Shuttle Also cheaper, but likely slower (wait for shuttle, wait for shuttle to fill, probably multiple stops)
Car Service Possibly slightly slower than taxi, more expensive, but many offer a grocery stop (if needed)
Rental Car More expensive, but allows you to go "off site" for shopping, eating, touring.
For two people, unless I needed a grocery stop or use of my own car, I'd go Ride Share