You have to remember that its team golf, so rarely are you just playing your own thing.
It's why I have stressed for a while for those that struggle with repeatability and their swing, should really be spending their time with that focus. Practicing putting, chipping, etc. That's fine, but the grass, greens, and bunkers are all going to be different than what you are used to. If you are a fairly low handicap, that should be your focus. If you are a high handicap, focus on the golf swing for TWO REASONS.
1. It will abandon you and nobody wants that. The idea of "look at all my pops" has resulted in a loss just about every time it has been a thing.
2. You have a chance to go through the fitting of a lifetime. Wouldn't you want your swing to be the best possible swing it can be?
I will second this, especially on the bunkers. The bunkers are like no other bunkers I have hit out of! I remember being on the practice range and heading over to the sand trap to get a feel for them and boy were they hard to hit out of. The sand just sucks your club in. Honestly, it's just hard to explain it, but everyone should be ready to adapt. This course is like no other you will play on and as JB states, focus on your short game! That is where you will make your money. Secondly, you are going to playing with clubs you have never played with before, so your game is going to change a little. Lastly, everyone should relax and have fun! This is what the event is all about. If you concentrate on winning and not on getting the most out of the friendships and experience and good people, you are missing it all!