It depends on when you are going.
A new Florida ridesharing law goes into effect on July 1, 2017. After that date both Uber and Lyft will be able to offer pickup for all classes of service at MCO.
Currently, only Uber Select (the most expensive) is allowed to pick up at MCO.
I checked RideGuru, and based on current rates, regular UberX/Lyft fares from MCO to Doubletree DS would be about $18, UberXL or Lyft Plus about $30-31, $42 for Uber Select, and $50-$52 for a taxi. Obviously, any of those rates could change.