Actually thinking too since this game involved alot plot which better to play in english over japanese for easier understanding. But the english version also seems bit chopped down, such like those exp or item boosting tome, if not mistaken Japanese version duration is 1 hour but global one just last half hour.

But for playing casually its not a bad choice la. Will depends on generous gems given out since the gacha really cost quite a lot per draw, 5k per time.

The rate for dffoo gacha actually pretty bad as compare to ffrk. Spent 30k gems on Squall event gacha and results just barely at the minimum guarantee 5*, just 7 pieces 5* out of 66x draw, 4x tiger fang, 2x zwill crossblade & 1x twin lance

Exp daily is Sunday ma, where each daily switch at 4pm (our time) if not mistaken. You can use quest key to unlock for half hour if you want to. And remember to disable battery saving feature before using quest key lor. Now really lack power orbs for weapon upgrading

Coop can use to farm crystal, joining as guest or play solo, (host only max 5 times per day) not sure if solo will consume link Bell or not as I never test it myself