Parking and riding refers to a static skiing, where the skier develops all the angles, in the lower and upper body, at the beginning of the turn and then just statically rides the ski edges around the turn.
It is much more fun and effective to continuously move dynamically throughout the turn and develop angles progressively. We prefer to increase and decrease angles throughout the turn, both lower and upper body.
It is typical of entry-level racers and intermediate skiers to become static when they discover carving, but this leads to speed control issues.
In relation to park and riding, floating is the exact opposite: where dynamic movement creates and uses energy.
The "static" nature of park and ride turns limits speed control options to just turn shape, lacking a good dynamic timing of pressure.
See Hip dump.
Some useful drills and sessions: