We got seven vouchers for snacks and light meals at different shops around the centre. It was an interesting experience and we comfortably used up the vouchers during our 2.5 days in Bologna. Other reviews said that portions of the food were large enough to share; however, I'd really recommend getting one voucher per person. In our case, the vouchers gave us 1 small plate of aged parmigiano, 1 small calzone, 1 gelato, 1 slice of pizza, 1 pastry, 1 coffee, and 1 plate of cold cuts with wine. Overall it's worth a try!