I know that the MRB coupons are all perforated and are invalid if taken out of the book ahead of time. Each voucher has the disclaimer that it must be removed in the presence of a casino employee. Otherwise the voucher/coupon is void. I have never bought the ACG book but was told by a friend that the ACG book is not perforated and that each voucher/coupon must be cut from the book. However he wasn't sure if they must be removed in the presence of a casino employee. Can someone who has actually used the ACG vouchers/coupons please enlighten me. I was going to order the ACG book for my girlfriend before our next trip to Vegas, but not if it involves a lot of hassle. Thanks for your help.