When Ekadasi occurs during the Adi festival, should we offer festive food during Thiruvaradhanam, will this hinder the Ekadasi observance?

If Ekadasi occurs during any festival, Ekadasi observance is a must. Rice has to be broken and cooked along with other delicacies for offerings to Perumal and then it can be partaken except by those who observe fasting as per the prescribed rules.