I understand supporting your wife in the “being there” sort of way. Still, the message you will hear preached is an incomplete Gospel. It will be an event that is HUGE, with people singing, hand up in the air, and getting all kinds of emotions going just because of the numbers of people. (not that that is ALL bad) Do you think this event would solidify your wifes faith as an Evangelical? If she is set on going and you are firm in YOUR faith, you may want to go just to see what she is being taught and experiencing.
I’m sure Palau is a mighty speaker, that is how he can fill stadiums. You’re in for a ride!
You could begin by checking out Palau’s website.