Replays save time as we can check for any other issues within the session and review the matter in more detail. They also give us the detail we need for the session ID (as well as the clog). Including a replay into a report can be done in less than 30 seconds, but can save hours of time sometimes. So its always beneficial where possible. In the case of this issue, even more so.
Generally client is always fine (as we can get the session ID from that to get the server one too if we need), but it never hurts to include the server replay link if you have it
You dont need all the split down sections, just the base replay.
The report has been forwarded now.