If you are talking about the Off Rodeo, from what I learned, yes, the fee to bring a person is the same whether they are driving or not, even just guests. Now if you wife is just staying on an off-site lodge you wouldn't have to pay the off-rodeo fee for that.
PhoenixTheBronco OBX, Leather, SAS, High. Blend 8/15, Online 8/26, Built ???, Shipped 11/2, Picked up 11/18