We used Tiffany for the first time last summer and loved the experience. Our driver was very friendly and professional, and was in constant contact with us via text from the time we landed. He met us at baggage claim with a sign. We did do the grocery stop, but we used it to do curbside pickup of an Instacart order from Publix. We timed it perfectly to where the Publix guy brought our stuff out as soon as we parked and our driver loaded them up for us. It saved a lot of time and service fees even as an Instacart+ member, I would definitely recommend it.
This time we are going with a driver highly recommended by our TA who is way cheaper because we need to keep costs down due to the cruise portion of the trip.