Plumber,
The IBO traditional world shoot is really no different than any other 3d shoot that you are already use to shooting. Like mentioned above, spend more time shooting in unfamiliar locations rather than your bails in the back yard.
The guys that win these shoots on a regular basis have learned to shoot without adding any preassure to themselves...in other words, they just go through the course as relaxed as possible, just like they are while shooting the local 3d shoot with their buddies on the weekend.
You can shoot your first 20 targets with anybody you want on Sat....then for Sun. you will be grouped with 3 other shooters that shot about the same scores on Sat.(pier groups)
No matter how you shoot, I promise you will have a great time...pappys place is just one of those places that you have to visit.