You should login to receieve login bonus and attempt Release Commemoration Quest everyday.
Which items should I purchase at the Commemoration Shop?
It's strongly recommended to trade Gil for Rainbow Visionx3 and Rainbow Fragment of Thought x1 at the release commemoration shop. On Saturday and Sunday, you can attemp Gil Chamber as many times as you want. Farm Gil Snapper to get enough gil.
Other items recommended to purchase are Faint Memory (blue), Soldier's Memory Blue & Green, and Cleric's Memory Blue & Green.
Release Commemoration Quest
PST: March 25th - 11:59pm, April 7th
You can attempt this easy quest once per day with 8 NRG Cost. You can get EXP Cubes, NRG Restores, and other items like Elemental Fragment of Thought, Gil Snapper, Adamantite, and Growth Egg.
PST: March 25th 2020 - April 12th 2020
You can get 1000 Visiore and 1 Rainbow Vision Sphere for free in total.
PST: 12am March 25 - 11:59pm March 31st 2020
You can perform 3 Normal Summons each day. You can also spend 1,000,000 Gil for performing a Normal Summon.
Unit Shard, Vision Card Shart, Elemental Awakening Prism, and other itesm can be summoned.
UR Guaranteed Summon
PST: 12:00am, March 25th - 11:59pm, April 7th
There are 1 time only 1 UR unit guaranteed multi summon and 1 UR vision card guaranteeed multi summon. You have to spend 2,000 Paid Visiore for each summon.
PST: Mar 25 ~ Mar 31, 2020
The following unit's drop rates are increased for this summon.