We had Tiffany Towncar pick us up at SFB. We booked one-way because we were flying home out of MCO and Tiffany wouldn't let us book round trip using two different airports. The towncar from SFB to Disney's Animal Kingdom Lodge cost $115 not including tip.
We requested the grocery stop. We got the grocery stop -- at a grocery store near SFB. I said that I knew there were grocery stores closer to the hotel, but the driver said they were not on the way and refused to go there. We did not buy perishables because they would have been sitting in the car for more than an hour by the time we got to the room.
OT - Are you looking at Allegiant? If so, watch out for fees. They charge to book with a credit card instead of debit card, take a carry on bag, check a bag, and choose your seat instead of getting it randomly assigned, among other things. Then there's the carrier usage charge, U.S. domestic segment charge, local airport passenger fee, 9/11 security fee and federal excise tax. The last flight I priced out was a $116 flight but the fees would have added about $111.