I've been playing on and off since vanilla. Did every raid in vanilla, Onyxia, Molten Core, Blackwing lair etc. Played Karazhan, Gruul's lair, Black Temple etc in TBC. In WOTLK, I killed Lich King heroic, one of the first on my server. And had ICC on heroic farm.
In MoP, I havn't got very much experience outside of the LFR. But I'm a very fast learner and a smart gamer.
Your activity? What days can you raid? What days can't you raid?
I can and do play almost everyday. I'm very flexible, so I can adjust my time after your demands. So I can show up on raids almost everyday.