Most every Catholic knows the Nicene Creed is to be collectively recited or sung at Sunday Mass. But there are exceptions. Test yourself while sitting in the purple chair, by determining if the Creed is (a) required, (b) optional, or (c) not part of the liturgy in these mostly seasonal circumstances:
* Sunday Mass with an RCIA Scrutiny
* Solemnities of St Joseph and the Annunciation
* Palm Sunday
* Easter Morning Mass with a baptism
* Easter Morning Mass without a baptism
* Easter Vigil without baptisms or confirmations
* Daily Masses within the Octave of Easter
* Ritual Mass for Anointing of the Sick celebrated on Sunday
These all have been discussed or done in my parish in the past few weeks. I put in a few ringers, too. Have at it, friends.
Catholic Sensibility 
Oh, I am rusty after a few years out of the trenches, but here’s my stab. Now, you don’t mention the permission to substitute the Apostle’s Creed, so my answers are directed only concerning about whether a Creed is to be said, not which one!
* Sunday Mass with an RCIA Scrutiny: B
* Solemnities of St Joseph and the Annunciation: A (and genuflection is called for during the Creed on the latter, tomorrow)
* Palm Sunday: A
* Easter Morning Mass with a baptism: C
* Easter Morning Mass without a baptism: C – when the renewal of baptismal promises are done (which is directed to be done), the Creed is omitted.
* Easter Vigil without baptisms or confirmations: Like above, as the renewal of baptismal promises is still directed to be done.
* Daily Masses within the Octave of Easter: A, as solemnities. The Easter Sequence is optional on those days. The Easter dismissal is not. Easter Friday and Sacred Heart are two Fridays of every year for which there are no penitential requirements, btw…
* Ritual Mass for Anointing of the Sick celebrated on Sunday: A (the general intercessions are, by contrast, omitted). Of course, this ritual mass is not permitted on a number of Sundays of the year anyway….
Liam has the measure of it, I think.