Golden Apples

It's how your team is structured and such. We have 6 difficulties with the hardest being the heroic, conqueror and expert which are also best spots to farm the medals. The servants in each difficulties changes if it's prelims, main event or finals, and so it's best to look at what servants would appear in each different time since you might have difficulty in heroic prelims, but not on the main event.
https://grandorder.gamepress.gg/return-nero-fest-2018-tournament-quests
This is the link of the tournaments where you look at the best times you could farm.
Novice or intermediate for bronze medals, Expert for silvers, Heroic for gold, and Conqueror for petals which are things you'd be probably farming if you desire the lottery.

Normally all event with lottery are recommended for using Apples. Because (1) it is a two material-gathering systems (Shop+Lottery) and (2) Materials from lottery is theologically infinite. So Nerofest is indeed one of them. Other could be Christmas. Da Vinci and The 7 Counterfeit Heroic Spirits are spifcifc with two Lottery poll but amazing materials.

Off course you can make plan based on your servants.
Like this Lottery provide more materials to latest servants like Saberlot, Archuria and Ozy, Nito. It has lots of EXP cards, but monuments and pieces are quite in low value.

You 1 and half hour - posted 10 hours ago
Seriously this maintenance is taking for ever ; they better give a good number of apologems