(mini guide) PVP Fest Basic Day One Game Plan

Focus healers as usual but not only the healers,
Make sure to keep an eye to the medals stacks your player and your enemies, you can see how much medals you have or enemies have:
check the little red circle in your buff bar ,each stack is medal you get in the map when someone is killed. You can see if enemies have some medal when you focus the buff bar also.
Tank should get the medals, it's obvious tank is harder to kill, get too much medals stack is risky if you get killed you loose all medals . i Suggested when tank is already stacked a lot to use the tank stance and don't feed enemies, stay near yours healers.
The medals can be see as a comeback mechanics when you got dominated you should focus someone with medals or it will be hard to get back in the score.
Healers be carefull also, it's better to keep someone with a lot of medals stack alive, make the good choice.
Mark enemies healer with 1 and 2, mark enemies medal stacked with 3 and 4.

Here's one to add.

Every melee DPS yet - "Don't run away from the healer to the entire enemy team at 10% health".

yeah it's a pvp basic for every pvp instance, you should get back before don't wait to be too low in HP,
we can add a lot of thing good for other pvp instance also:
the first thing in my mind, you need to focus strongly on what happen, even if you are melee or tank, keep an eyes arround the arena, if any enemi is low on hp, stwitch to him, keep an eyes on your healer HP, often healers is behind it's hard to keep an eyes on healer directly, you can see easily if the healer hp is fluctuate a lot, in this case healer is strongly harrased, help them, if you healer is dead you will all die in a raw. try to figure if any annoying dps like a smn for exemple is a little free to cast, don't let him alone free, if nobody is on him he can kill someone easy.
The gameplan say you want to kill healer fast, but it's just the basic gameplan, if you kill healers fast you set the score in the begining, but otherwise it's not just as simple, a good group need to react and give the good answer to what is happening.
It's like any pvp, you just need to add the Medals mechanic in the addition in the Feast. kill someone with 9 medals stack will bring you back in the score even if you are near the loose.
I would even say keep melee Limit break for kill someone with a lot of medal stack is a good idea.

I'd like to add that the best strat I've seen so far is Pld/x/x/x. Have your melee grab the off buff and have your ranged grab the def buff. This makes your team pretty hard to kill. The ranged with the def buff is much harder to focus and your tank can cover the melee dps if he needs it.