Against all odds, it may be that one or two folks might express what they see as a bit of cynicism on the part of the promoter. If the usual pit pass price is $40, and the promoter puts forward an offer of a 50% discount, for each entrant who brings another "crew member", the promoter picks up $20 that would otherwise not come thru the gate. Apply whatever shade of lipstick that you will, the underlying substrate remains the same: revenue enhancement.