According to the instructions above, it says do NOT hatch until the game says, so it seems that early breeding would be ok. This is for the Zinguin.
I enjoyed this event
I didn't enjoy this event
I started but I couldn't finish
I didn't participate
Runes
Jingle Wings
Food
Coins
Bell Blossoms
Ringtail
Ringing Wreath
Bobtailed Bay
I didn't like the prizes
According to the instructions above, it says do NOT hatch until the game says, so it seems that early breeding would be ok. This is for the Zinguin.