I can't speak for sugar free, but I did have a positive experience with a gluten free request last July. When we checked in I told the Cast Member who seated us about my wife's gluten allergy. She immediately went to the kitchen, then returned shortly and said that they were making a special gluten free plate for my wife. When they brought it out it was a huge plate with a lot of variety. My wife couldn't eat it all. Since sugar issues are probably more common than gluten issues I assume there won't be any problems for you if you ask the cast member upon arrival.