I use my Verizon iPad3 as a hotspot and it works pretty well. Just have to watch your usage.
I also have a Clear ispot I could give you. If you can activate it, it's $25 a month unlimited 4g.
ALAC is released under the apache license, which definitely doesn't restrict commercial use.
AIFF is completely open, and is unencumbered by any licensing restrictions at all
honestly, you need to see denali in the first 2 weeks of the season, in the middle, and at the very end. It's like 3 different parks. Then there's "bus tours in denali" "camp in denali" and "brass up and climb denali"