We just used Tiffany's on our April vacation and they were great, on time, right at the baggage claim area when we arrived, infact they came a little early on the return, so we could stop at Dunkin Donuts and get a bagel & coffee for the wait at the airport!
We stopped at a Publix (not busy & had everything we needed, I made a small list on our flight down)for our 30 minute stop. When I made the org.resse via the internet I sent off an additional email requesting a grocercy stop and I received an email confirming it and I also mentioned that I had a coupon in the Passporter book for $8.00 off, they had it all calulated on thier notes (I saw the sheet in the car). The price was right, roundtip with coupon, not bad with a grocery stop! Had two different drivers, but both were great & we tipped them well!