During this time, you will not be able to make any changes to your account such as updates to users, business information, feeds, shipping details, or linking your Google Ads accounts.
You can still upload products to your existing feeds or data sources and run ads as usual.
Note that the Google Ads API is also affected by this outage, as you will not be able to link MC accounts and Google Ads accounts together via the Google Ads API during this time period.
If you have any questions or concerns, please don't hesitate to contact us via the forum.
Benji Rothman, Content API for Shopping Team