The only "expense" would be electric and that's certainly not 10 grand for a weekend. Everything else is already paid for and any maintenance is done free by volunteers. Literature is already paid for, trucks bringing it, paid for. Bethel drivers, paid for. That's all paid for through 200 yrs of adherent donations.
Why does a DO have 600 dollars worth of weekend expenses? Whole families don't have that. Rental cars are only $99 for a weekend.
I mean really.