How to get MCC Account Labels at the sub account level? Ads API Beta

HI, I am working with Ads API Beta and have been able to get each sub account in our manager account and pull metrics and what not. However, now I am trying to get the labels that are attached to each sub account. When I run the below query I get all the labels, but the customer is always the

Ad Schedule returned result null in one source and available in another??

I am running into an issue where I want to retrieve the ad schedule for a campaign. To do this I can use the following query: "SELECT campaign_criterion.ad_schedule.day_of_week FROM ad_schedule_view". With that query I get a returned result under campaign_criterion.ad_schedule. However, to re

campaign_criterion.ad_schedule FROM campaign_criterion is null but campaign_criterion.ad_schedule FROM campaign_criterion.ad_schedule_view is not null

Running into an issue when I call "SELECT campaign_criterion.ad_schedule.day_of_week FROM ad_schedule_view" I get return results, but "SELECT campaign_criterion.ad_schedule.day_of_week FROM campaign_criterion" returns null. Is this intended or is it suppose to be returning the same resource?