Ditto'...though I am giving at least half effort since I've finished farming fries & is currently at the 11th box. Only CE drops so far are 1 each of Nero's & Sheba's.
I haven't even touched any of the challenge quest. Depending on how annoying they can be, I'd probably even ignore most if not all of them completely.
Remaining tickets didn't even get me anything notable, not even the 4 star or higher farming CEs.
So far, this event has been pretty 'Meh' for me overall.