Has anyone ever had quoted Avis rates changed upwards as a result of the use of a coupon? I have an Entertainment Book code (TUGA019) on an upcoming Sat-Wed reservation; the coupon is for a free weekend day. The coupon was accepted online, and I meet the Saturday night keep requirement. However, the back of the coupon makes mention of weekend rentals ending on Monday and rentals kept beyond will incur a higher rate. If I recall, there is no mention on the coupon's face as just applying to "weekend rentals"; rather, the coupon is for a free weekend day.

Any thoughts are appreciated.