105 Hours

In just over a hundred hours I'll be on the plane for my first international trip (excluding the time Uncle Earl took us into Canadian waters on his boat).
I have a truly interesting combination of excitement and terror.
I have wanted to go on this trip for so long I cannot seem to comprehend that, yes, I really AM going, yet, at the same time, it is so far outside of my experiences and knowledge that I simply don't know what to do / expect. It can be the smallest things that get me worked up like; how am I supposed to change my money? How does one pay for the tube? How do you go through customs?
Then there's the never ending tug-of-war between my pack rat nature and reality. How much stuff is too much stuff? I'm doing my best to bring only one suitcase and my camera bag but I still have to do my packing 'for real', so I'll get back to you on how well that works. However, what am I supposed to do if I get too many souvenirs, or (with the way I'm packing) any souvenirs?
I want to plan for every eventuality- but know so little that I don't even know what 'normal' would be!

While all this goes through my head, I have another day and a half of work and then two days of preparation.
Then, for better or worse, it's over and I'll be on my way!