What does everyone use for making espresso when on vacation or away from their home setup?

I've looked at the Rok, The Nomad, The Handpresso. Any experience? I presume most people will recommend a hario hand grinder?

I am going on a 2 week cruise and would like to make espresso on this trip as well as on future trips. Airport security concerns would exist at times: ie no pressurized CO2 cartridges in a carryon I would assume. Anyone have any practical advise for making decent espresso on the go or is this impractical?

Thanks,
Jeremy

I can't remember the specifics, but user lpecan came up with a rather ingenious, if excessive, way around this:

Let's do the mypressi TWIST

So don't automatically write off the Mypressi. With this, you can get 4 cartridges on the plane totaling ~16 shots of espresso. Beyond that, I wish you luck.

Ha, that is genius! Thanks for the info