General

Question about Rainbow Event

Rainbow Festival

April 1 - April 21
Requirement: Lv. 13 and above
Accept the quest '[Rainbow] Wednesday Mission' from the star notifier on the left side of the game window or from Cassandra in the Event Hall.
A unique mission will be given each day. Complete the mission of the day to receive different colors of crayons (7 total), Rainbow Magic buff x3, and a Rainbow Box.
Accept the quest 'Rainbow Drawing' from the star notifier on the left side of the game window or from Cassandra in the Event Hall. This quest will give you a Rainbow Drawing that you will need to color using the crayons obtained from the daily missions.
A unique mission will be given each day. Complete the mission of the day and to receive different colors of crayons (7 total), and some buffs. Collect the 7 different crayons and complete the rainbow picture for a reward.
Rewards:
Rainbow Badge - Untradeable. Req. Lv. 10, all stats +5, MaxHP/MaxMP +100, Weapon Attack +5, Magic Attack +5, Accuracy +20, Avoidability +20, Jump +20. One-of-a-kind item.
Rainbow Earring - Untradeable. Req. Lv. 30, Weapon Defense +35, Magic Defense +35, Accuracy +10, Avoidability +10.
Cloud Robe - Untradeable. Req. Lv. 30, MaxHP/MaxMP +10, Weapon Defense +42 Magic Defense +17, Accuracy +5, Avoidability +5. Tradeable one time when using the Scissors of Karma.

So at the end of the seven days, will we get only one of the rewards or all of them? It says "a reward" but I also notice that they give us exactly 21 days.
So yeah maybe I just answered my own question but I'm just looking for confirmation: If I didn't start the event until April 3rd, does that mean I won't be able to get all of the rewards?
I really want the cloud robe.