Yeah, MEPS didn't take too long as far as the physical went. Just make sure you don't change anything on the forms, no matter how much they try to scare you into doing so. As long as you know that it will not affect your performance as an Officer in the Navy or MC, then all it will do is cause more paperwork headaches and holdup your process.
It was interesting talking with all the recruits there...all wide-eyed, fresh out of high school, and some not even yet. The thing that really struck me is that they believed everything their recruiters told them.
Oh yeah...drink LOTS of water that morning. Some of the in-processing kids were held up because they couldn't pee for the life of them.