When Laguna changes something in the Excavation Site (Lunatic Pandora's Excavation Site), that area will then affect the time where Squall arrives at Lunatic Pandora. Depending on what and where Laguna finds the object.
As Laguna
Locate the Confuse Draw Point, and search the area for an Old Key.
As Squall
When Squall passes by that area, he will have access to an Ultimate Draw point.
As Laguna
Have Laguna remove the lever from the middle panel to trap the Esthar Soldier.
As Squall
Now Squall will have access into the middle panel where you'll find a Silence Draw point.
As Laguna
When Laguna finds the detonator switch, have him press the red button instead of the blue button.
As Squall
Have Squall go to the base, where you will have to climb a long ladder. Now the Base Door will be open, and inside is where you will find the LuvLunG item.
As Laguna
Have Laguna search the pipes for the second Old Key.
As Squall
When Laguna finds it, and loses it, Squall can now have access to more rooms, because the bolders have filled in the gap on the ground, giving Squall access to where he will find the Combat King 005 magazine.
As Laguna
If Laguna pushes the small bolder, he will find a Cure Draw Point.
As Squall
Have Squall search the area where the Cure Draw point was, he will find a Spd-J Scroll.