HoC, accidently used all my cards, do I HAVE to use them?

[R253038813]

Or are the HoC draws just like the points in the Beach event, they remain for me to use even after the event ends and are available for the next event?

[osobena]

Or are the HoC draws just like the points in the Beach event, they remain for me to use even after the event ends and are available for the next event?

No, you have to use them that event, they will not be there next one.