when someone tries to use a discount code on a bottle that doesn't discount, it would be helpful if they got the reason they can't use the promo code so they don't have to email or call us. They do get the error message but in their minds they just think the coupon isn't working. It needs to be more specific. Something like "The order you are placing is already getting a discount. We cannot offer more than one discount per order" Or "True Champagne, Rare Wines and Liquor Are Non-Discountable Items"

Is it possible to do this?

Same for when someone tries to order a bottle of liquor from out of state. We can't ship liquor across state lines. The error message should say this at checkout so they don't think or app isn't working.