Might be a day too late but I’ll try – the Meta has various dropout options:
standard QR dropouts
12mm bolt through dropouts (usually included with bike)
12mm Maxle dropout (available as an upgrade)
Either 12mm bolt through option will stiffen the rear end but require a new axle as well as a 12mm bolt through compatible hub, such as the Pro II Evo (which in turn needs the 12mm conversion).
You can use a bolt through axle with the standard 12mm dropouts, but loose the QR ability.
Alternatively the 12mm Maxle dropouts will take a standard M12 threaded through axle – the threaded right hand dropout replaces the nut, so only a hex key needed to undo, or you need to buy a Maxle. Try to track down a Maxle instead of Maxle lite if possible.
So to go 12mm, you’ll need:
Hub
12mm kit for hub
12mm dropouts for bike – std or Maxle
12mm Thru Axle or Maxle
Any bike shop should be able to sort the hub/wheel/maxle part – check eBay or http://www.commencalownersclub.com/ for Meta Maxle dropouts.
Saying that, sounds like it’s going to be too late for your trip!