They will rip you in shreds if you approach them YOLO
Apparently there is a quest that awards two “O’Draxxia Worker Lodging +1 Expansion Coupon”.
It is a furnishing item that grants 100 interior points for your residence. This item can be redeemed when you complete the Halloween Adventure Log. You need to give Magical Shard x 20 to Gueldia which comes to about 50 million silver depending on the market trends.
According to a Reddit thread here, Behr Wild Herbs are the best resources to gather to maximize your EXP.
Short Answer: You can’t.