I did some more research, and apparently the block fire I was using in the .WAC file only really works in single player games, which is why it works when I test it alone.
It'd be great if I could playtest it with someone else to confirm/deny…
But I checked, and it appears that through WolfRat, I can restrict and then unrestrict weapons while the server is running on NovaWorld. So if I know the Demolition Derby Map is loading, we can swap it over to limited weapons only.
I was thinking just knives, anti tank mines, and satchels.
Which weapons should we allow?
:ouch