Um, well, logistically? The lockers are at the front of the park, the slides are at the back of the park, and the chairs are all around the park.
So, let's see.
Put stuff in locker.
Find chair and sit.
Give up chair to go on slide.
Leave slide, proceed to front of park (ignore stinging sensation of water in eyes).
Access locker, get towel, use towel.
Put wet (eww) towel back in locker.
Find chair and sit.
Give up chair to go in wave pool.
Swim.
Exit.
Proceed to front of park (again ignore stinging sensation...)
Access locker, get damp (ewww) towel, use towel as well as possible.
Put wetter (ugh) towel back in locker.
Find chair and sit.
Give up chair to enjoy Lazy River...