Wow! Thank you so much everyone for your quite helpful responses!

It's nice to know there is a community of people out here that are so helpful. I don't even know where to begin to respond to everyone.
But first, yes, the lesson about the passport has been learned the hard way. It is locked away and never leaving the house!
I knew that about the volunteering thing, which is unfortunate. I feel like I should be doing something productive with my time since I can't work, and volunteering seemed like the perfect thing, but oh well. I'll have to find different ways to occupy my time (like wedding planning, for one thing!)
And I will definitely look into the walking tours! My fiancé and I are into geocaching, and we went to a meet of geocachers last night. Unfortunately, my social anxiety kicked in so I didn't really meet anyone new except for a few people from Germany who were seated at our table. I know I'll get there, but I'm always worried that people are judging me for being American? Is that weird?
I was living in Tuscaloosa, AL before I moved here (Roll Tide!!). I'm an air force brat and in my 33 years, I've lived in lots of different places, but never overseas. I don't really have that much of a southern accent, even though everyone expects me to sound like I just fell off the turnip truck.

Also, I don't know if anyone is into college football? I've been able to watch the first few games over here, but my sweetie doesn't get it at all!
Thanks again to everyone for being so kind!