Okay... I will update you all since you were so kind to give me advice and replies!
My Master decided to stay an extra two days- so that was really nice. I was anticipating being very nervous, but I quickly felt relaxed and there were never any awkward moments. Everything felt very natural and went very smoothly.
He had me meet Him naked in a prone position (I know, I know- not a very safe way to meet), but it was very good for establishing His dominance up front. Sexually everything was great- this is the first time I've ever had a real Master in person, and I enjoyed it even more than I thought I would. We did some vanilla things as well, but practiced trying to keep the dynamic as a more 24/7 thing. I also got to have Him put His collar on me and lock it in person! I was so sad when He was leaving and He had to unlock it. :-(
I also got to do a few things I'd always wanted to try, but hadn't ever gotten to do before- such as face-slapping. (Which is amazing, btw.) Master was also very good about not taking things too fast or too slowly. He seemed very good at gauging my moods and how quickly I would be ready for things.
Anyway, I could go on and on about how great I think He is, but basically I just wanted to update to let everyone know that everything went very well. Thanks again so much for all your replies!!
I also can't stress enough how thankful I am to this site for providing the forum for me to meet such a great Master :-)