I still recommend Uber or Lyft, may check to see if there is an option to book ahead of time with them. I don't have any personal experience with shuttle services, but my co-worker used one to get to the airport so we could fly to GA for our academy, and they didn't show, but claimed they showed up. Needless to say my co-worker ended up driving and paying to park, barely made it to the airport, and we were running to the terminal.