Yes.
To get out of the chat, press X.
You can not dual wield energy swords in halo 3 but there are rumors that you can in halo reach.
Grifball is a Double EXP Weekend playlist on Halo 3 matchmaking. It resembles football, but with bombs, swords, and Gravity Hammers! Grifball can be played in Halo 3's online multiplayer whenever it is featured as a Double EXP Weekend playlist.
yes there is, you use B for team chat, and I think Enter for global chat
You need to invite or be invited to party chat to speak to your friends. If you want to talk in game chat, you must create a party, click on 'party options' then move along to 'game chat.'
yes you can
Go to game chat through your party menu hit y to go into game chat.
I expect Bungie to keep the extras from halo 3 and move them to reach. So, to answer your question yes I think they will have double exp. weekend in reach.
From My experience, yes and no. Huh? you ask. Well I have experienced times where I can hear other people and sometimes where I can't. So that's my answer. THANKS
The speech bubble indicates private chat. You have to turn that off to get rid of the speech bubble.
halo 3 obviously
Halo 3: ODST is the newest of the two, but not the newest Halo game.