Couple of tips...
the lighting a fire in wet conditions does not mean starting a fire with wet wood. The concept your looking for, is in wet rainy conditions, where everything appears wet, you can split standing deadwood to get inside where it is bone-dry.
Also, I bought one of those mag bars from firesteel.com and in comparison to local sporting goods store brands, it's like slicing butter. Huge difference, and still only about $3. Even their firesteels are softer, throwing globs of molten metal instead of just sparks.
Another thing, if you try a firebow, the straighter the bow the better, you want it to nearly ride the spindle. If the spindle is slightly tapered to either end it seems to make it move smoother. (just a couple things I haven't seen mentioned on tv)
Sounds like a great trip, wish you lots of luck!