cb server testing || map restrictions

hi,
http://www.clanbase.com/rules.php?lid=2907

15. Before the match.

Imo those rules are little stupid. We need to spend an hour to test server and stuff? Spend hour on irc (one of my teammates is not using mirc, i dont like to use it neither...) and connecting to servers and stuff. How can I play well after one non-productive hour of stupid sitting and watching screen. I want to play some pracc before the match to be warmed up...

So I got the question, if we finish testing fast enough (lets say 40 minutes before match starts), can we leave irc and stuff and go play pracc and then come back on warserver in time?

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Havent found in those rules:
What about map restrictions, like frostbite (oc 3on3):
Can I plant side?
Can I use side, but not plant?
Or perhaps I'm not allowed to use side as allies?
Can I use side as axis?

I know braundorf isnt played, but could allies plant and go side there? Or only busting, or not allowed to use side at all?

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Have a good night, pls need answers