If your daughter will be paying for everyone with a credit card, then the cc must have her name on it, i.e. the name on the AP must match the name on her i.d. and on her cc. The CMs are supposed to check for that. Technically, if all parties pay cash and your daughter is in charge of paying the bill and she pays with all cash, then the discount should apply to the whole group. But your daughter cannot apply her discount to the group, then ask for separate checks. Or apply her discount, then ask if more than one credit card can be used to pay. Does this make sense?