Since we all love 25-man content but sometimes become very frustrated with organization, I've put together a basic etiquette guide for raids which will benefit all of us. Even though we are a very casual guild, I feel that if we can follow through with acting on the message it will ease a lot of raid tension. Please add any additional thoughts

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Signing UpRaid leaders want as many guildies as possible to be able to join a raid that's scheduled or not scheduled. Please keep in mind a couple of things. When events are scheduled please sign up to attend. If you sign up for a raid but cannot attend, might be late, or not sure please send a message to the organizer to put you on "stand-by". This lets the raid leaders know what's going on when trying to formulate groups. Also, if you sign up please be online and ready to go or let someone know if you'll be a few minutes late.
Many times there are more guildies that sign up for a raid then slots to go. If that is the case it is up to the raid leader to determine who is invited. Invites are generally based on what types of classes are needed first for the specific run and who signs up. If you don't get to go please be patient and realize it is not personal.
Read and Watch Strategies Please read boss strategies and watch videos before raids so are familiar with the fights yourself. You can understand the strategy better by watching the video many times than reading the strategy. It also helps keep the event moving forward.
Come ReadyHave your armor fully repaired and alternate gear in your bags if your dual-spec'd.
Gather or buy anything you need prior to the invites such as food, flasks, potions, bandages and other consumables.
Plan Ahead Please try to have any quests, instances and other activities complete around 15 minutes before invites. This again helps keep the raid flowing smoothly. Most of the time guildies don't mind waiting if you weren't planning on something tanking longer than usual. But some can be late routinely which is not fair to the raid group.
Wait At Stone Do not wait for summons. Start flying to the stone when invited or before.
Listen Up It's very frustrating to raid leaders when they explain strategy and someone dies because they weren't paying attention. When raid leaders talk please listen! A good example is "Frogger". It should not be rocket science to get through but there are those that die constantly going through. When there are multiple players die it also takes time to rez, thus prolonging the raid unnecessarily. If you don't understand something please speak up and ask as soon as possible.
Chatter There's a time and a place for chatter in a raid. We are very casual and enjoy having fun (others are very strict), but constant random chatter about gear and other items can be annoying to some raid members. Also, during fights please be sure to keep chat specific to that boss such as when someone is being attacked or has a de-buff. Encouragement is great, but please make sure it doesn't interfere with announcements.
AFK Please keep AFK's to a minimum. Go to the bathroom, smoke, get any drinks or snacks ready before the raid begins.
There are times when you will need to go AFK; someone's at the door, phone calls, one child is beating on another, are all OK reasons to go AFK.
If you have to go AFK please let your group know why and a reasonable time frame for return. If you don't, the raid has no idea when to expect you back. "One sec" can turn into 3-4 minutes or longer. Consumables run down and time is wasted. Don't be surprised or irritated if you're replaced or removed from the raid if you are gone longer than the group expects or if you don't let them know why.
Golden RuleTreat your raid members the way you want to be treated. Use your common sense and if you are lacking ask someone what is appropriate.