I had my first one.. oh.. I think it was December.. but i'm not sure.. it's one of the few things I can remember!
It's loud, the ear plugs aren't effective against the noise. At all. Although, you can't hear the people talking to you.. it'd have been great if I could have kept them for every day life.
In my MRI, the tech people could talk to you, it was quite reassuring.. But they didn't warn me that the whole machine would start shaking violently.. It was how I imagined it would be to be inside a rocket before launching..

Just be prepared, take some painkillers and don't be stupid like I was and assume you can go back to work or see a lot of people. I made everything so much worse because I'm stubborn!
Good Luck!