Yep mate...that is good practice......
Part of your "ride through" of a terrain park is obviously used to visually look at the features; paying close attention to the landing zones. Along with that, this gives you a feel for the snow conditions and how fast the snow is. It also is a great time to watch other riders and see the speeds they are carrying and where they are landing.
Also, on many park jumps, the boosting ramp is like in the middle of the "hump", so you can ride the hump along side the ramp on either side to get a feel for the approach, look at the ramp from either side, and get a feel for the landing.