Don’t forget to go on your ECRs during the event. Last year I got 2 cursed storage chests from ECRs during the event. So maybe all storage chests are higher drop rate during event, or I’m just super lucky.
Most likely the latter, but no harm in trying. The worst that could happen is you don’t get a storage chest drop.
But just wanted to let people know, maybe motivate you to get back into ECRs again for the event (if you stopped running them), for the chance to maybe get a good storage chest, if it in fact is higher drop rate for the time being