You're much better off to arrange in advance for car service. I LOVE yourride.net. The car services generally charge $70-80 r/t and that includes a free grocery stop. You would tip on top of that of course--generally $10 each way.
Cabs cost $45-55 EACH WAY, plus tip of course, and the meter stills runs if you make a grocery stop.
The trip is about 30 minutes each way--not including a grocery stop--it could be a little more depending on exactly where on property you are going and traffic conditions.
Anne