I'd call that an app fail, taking more time to use the app than writing a list then walking there and back with your complete order.
Additionally, if you think about the feature set that would be required to facilitate bulk orders then you will quickly find that it would be quite large feature set and require it's own flow. The app does has new-ish features that allow you to re-order prior orders and save drinks, which would help for these bulk orders, so they are making progress. If you are consistently ordering drinks for a large group of your co-workers then you can save their drink preferences and boom.