So, if I understand this right you have many different types of account buy you are advertising something like "Come see us at First National Bank. We offer mortgage loans, CD's, Free Checking and Safe Deposit!" (
Now you know why I am in compliance and not marketing
)
Yes, you can advertise that you have Free checking as long as one of you checking accounts qualifies under TIS as a free account. It is the customer's choice if they choose to open a free account or go with another one.