Querying for "Remaining Account Budget" (Again...)

[AdwordsAPInewbie]

I am looking to query Account budget and Remaining account budget from Adwords API.

A quick search in this forum reveals that this question shows up from time and time again.

From this thread,

Next, let all "budget orders" go through that MCC. A "budget order" is similar to a purchase order, you give Google the right to spend a certain amount in a certain period.

Having done that, you can use the BudgetOrderService - method get returns all budget orders. You have to call that service with a login associated to the MCC with the budget orders. And then you're still not there, you have to ask Google for whitelisting (see the highlighted section of the docs).

Is this still the only way to query for Remaining Account Budge for all accounts within an MCC account?