An additional point: a single crate delivery is sufficient to unlock the new Favour opportunity card after the event, and the card is the same for everyone who delivered anything during the event.
The main reason to spend a lot of Scrip on crates is to increase the Crate Conveyor vanity quality to 777, which has no mechanical benefit.
This vanity grind costs up to 5439 Scrip in total, but the real issue is that there aren’t enough actions in a week to collect and deliver 777 crates, so you’ll need to do it over multiple crate commotions or pay for a lot of action refreshes.