The franchisee shall not, as to rates, charges, services
or facilities, make or grant any undue privilege or advantage to any
party nor subject any party to undue prejudice or disadvantage, provided
that the franchisee may establish reasonable classifications of customers.
Nothing in this chapter prohibits the reduction or waiver of charges
in connection with temporary promotional campaigns, provided that
the same waivers are provided to all similarly situated customers,
or providing a senior citizen discount.