Fill in the amount boxes on coupons?

[mduke93]

I try to fill them in but there are occasions where I forget. Most of the times the cashier appreciates the help.

[TeePee]

I would never do this as I think it woudl void the coupon.

[Gertie2u]

I don't write it in on the coupon, but I write it down on my list or on a paper in my notebook so that they don't have to look it up.

Same. I've had them have to leave room for initials or whatever their boss requires, so I don't write it for them anymore. Just note it so it is easy at checkout.