That said, watching the progress bars creep across on various iPods was amusing, especially....
This is my iPhone.
The free space is to make sure I have enough to snap some photos and blog or twitter with them along the way. Notice that it is largely audio, for listening to during long lines and such. It has a gorgeous screen, but video slurps too much battery life in case emergency calls are needed.
(Yes, I'm taking a charger -- I mean in case we get stuck at an airport or something, though right now the FAA says Detroit is within 15 minutes of takeoff on all flights.)
Anyhow, this is my iPod classic:
Notice that it's largely video, with very little audio? That's for two reasons. One -- some hotels have TVs with A/V inputs, so in case of too much Disney channel, we might be able to watch our own stuff. Two -- even if the battery gets drained to zero on this, we won't be incommunicado.
Now, I also have battery backup -- a nifty little doohickey that takes 9 volt batteries (which I prefer for gadgets instead of AA or AAAs 'cause you can test the batteries using the tongue test), but I loaned it to my mom for her phone during a recent power outage and it's MIA.
About to shut down computer and put phone in Airplane Mode to conserve battery power, but will probably switch it off for twittering here and there.