Stay 5 Nights@resort,6 Days At Park?

[MISSIOWA]

I have heard from other travel agents that if you stay 5 nights at the resort, they always give you a extra day at the park, or if ya stay 4 nights you get 5 days at the park. Is this true? Anyone else know if this is true? The first day we get to our resort its going to be late so I dont want to waste a days ticket for the first night. Anyone know? Thanks MissIowa