Dang. I went about mine all wrong. I bought mine from CVS for $50 and followed the directions. I had no idea I needed to pay hundreds of dollars to get virtually the same thing...
OP, I forgot my CPAP on a trip out west and didn't realize it until I went to be in Odessa. I wasn't about to drive 6 hours back to get my CPAP. I went and bought one of the mouth pieces from CVS, fit it and tried it out. I slept much better and my significant other was happy with the results. It did not work as well as my CPAP, but it sure was a heck of a lot better than going without it. If I was camping in the woods, like you are wanting to do, and I was away from electricity, I for sure would want my mouth piece.
And I sure wouldn't waste my money on an expensive one from a dentist.
Class of '94