Slot guys - +ev opportunity?

Just wondering since I hear an ad for this on the radio all the time.

http://www.tropicana.net/events-and-promotions/?id=323

Not really. Limited machine options and you don't get back real money. You will also have to make 3 separate trips to casino to get reimbursed on losses with free play vouchers. How many people are going to just gamble their free play and walk out door? Not many and those that could make this promo potentially +ev are vp players and are excluded.