Digital BW, The Print

My primary photographic efforts these days are covering my daughter 
at horse shows where she participates in hunter/jumper events.  I'm 
trying the switch to digital after years of using film, and in the 
process have acquired two Epson 860 printers, one of which I use for 
B&W output and the other for contact sheets and the occasional color 
print.

I'd like to take along the color printer when I go to a horse show, 
in order to be able to at least print out contact sheets as we go 
through a weekend.  I dump images off the camera from time to time 
throughout the day, as breaks occur, so as to leave as much room on 
the memory cards as possible at any given time.  Once in the computer 
I can produce contact sheet output pretty quickly with the software I 
have, which gives a good idea of the coverage I've gotten so far 
during the weekend.  

I have a sturdy case (actually, it's nearly bullet proof - very 
solid) that will protect the printer in the car, but I'm wondering if 
any of you have experience moving one of these printers on a regular 
basis?  I assume it should be packed so that it's flat, not standing 
on an edge.  I also assume there's nothing much to be done about the 
ink except to be sure that the carriage is parked (which it does when 
you turn the printer off.)  Are there any other things I ought to be 
aware of?  Or strong reasons not to move the thing at all?

Thanks for any thoughts.

Cheers,
Kip Babington