Most patients report a little tenderness when the cast is removed but if your surgeon uses a cotton swab saturated with alcohol to help remove the adhesive from the tape and glue you should be okay. Although it really shouldn't cause you great discomfort.
The sutures that may be removed may hurt when someone else removes it due to them not actually being able to tell when they are hurting you. They also may snip your flesh slightly when the scissors are used to cut the actual suture. This isn't as rare as it as it should be and solely depends upon the surgeon's meticulous nature.