Groupon Reconciliation

I would love to hear advice from other organizations using Groupon, particularly in the area of end-of-day reconciliation for cashiers.

We are looking into a trial run with Groupon for museum General Admission, which would be redeemed onsite at our Box Office. The plan is to redeem the Groupon in their merchant center and then use a $0 price type in Tessitura to issue the guest’s ticket and account for attendance.

My question is if there is a way to account for each individual cashier’s $0 Groupon tickets that were entered in Tessitura. The Groupon merchant center does not offer a break-down of redemptions by user. So if a cashier forgets to redeem a Groupon in the merchant center, or uses the Groupon price type in Tessitura to give away free tickets when they shouldn’t, there does not seem to be an easy way for us to catch it.

Has anyone else run into issues with Groupon reconciliation, or found a good solution for tracking down discrepancies?