Hi - just starting answer questions on this platform so bear with me.
Are you looking to order event reads or writes? It might be worth considering what consistency level you need, as this could affect the ordering you see.
This page of docs might be helpful:
If you need stricter consistency guarantees than the ones provided by session consistency and single-digit-millisecond latency for writes, it is recommended that you use bounded staleness consistency level.
The cosmos dB change feed might also be what you’re looking for:
There is guaranteed order in the change feed within a partition key value but not across partition key values. You should select a partition key that gives you a meaningful order guarantee.
Please let me know if this helps.