Me and my team are planning to use it for the upcoming https://wrccdc.org/ competition.
During the regionals competition, we go to a physical location and are not allowed to bring our own electronics. In addition, there is a firewall with an allowlist, meaning we have to ask for stuff to be unblocked, or self host services we will want/need.
Crytpad is small enough that it can be deployed during competition without much fuss, and it allows for collaborative editing, which is useful for things like sharing passwords.