Even if you can’t progress as each phase begins, have no fear! You’ll be able to accept all of the quests, so rest easy knowing you can do this event at your own pace.
Thank you! Thanks for spoiling me... I feel like I'm back in kindergarden.

Anyway, there's now reason way anyone/ anywhere shouldn't be lv.15+ or lv.25+ for that matter. Causal should at least have a lv.50 job by now, let's be srs about this. Oh, I understand that each phase isn't required you start the previous phase for the quest, that's good!
(it's not like anyone will be ignoring this event...or will they?)